A/N.: I always shipped Glenn and Sera so I wrote this even though I have no experience in matter of writing romance, please be indulgent in that matter. I was sad to find how their stories together ended and don't know if Glenn's feelings for her were mutual or just a one-sided thing, but I decided to make so for the former because I really like the moments of the two of them together~! By the way, this is only fiction and doesn't hold any spoilers or whatever. Though she is named as "Sara Silvers" on the wikia, I decided to keep with "Sera" because this is how her name was pronounced.

In a dark room without lights, a young woman in her twenties with short straight black hair and blue eyes who wore a maid outfit was smiling at the screen displayed in front of her. She was a necromancer and one of the member of the Researchers of Divine Wisdom, a terrorist organisation operating in the Alzano Empire, her name was Eleanor Charlet. She once worked undercover in the empire for her organisation and pretended to be the queen, Alicia VII's maid and was planning her assassination and her daughter's, Princess Ermiana El Kel Alzano also known as Rumia Tingel now, a 'supernatural' banished from her family because of those abilities, for their own purposes. Of course their plans failed many times by the intervention of a former Imperial Court Mage Corps, 'The Fool' Glenn Radars.

"But still, I just witnessed something interesting, didn't I?" On the screen was displayed the scene of Glenn and his student, Sistine, against a fellow former Imperial Court Mage Corps, Jatice Lowfan through the eyes of one of her subordinate who was spying on them. Although the latter didn't worked with her, both of them were seeking to reach the Akashic Records, to be clear the 'power to rule all the theory of the world'. She thought about one or twice to make an alliance with him for that purpose and how he did give Glenn an hard time, but dismissed that idea after seeing how the man himself despised the organisation she was working for.

'However, Sera Silvers, is it?' Through the many mentions of Jatice and the reactions of Glenn at that name, she had concluded that it was surely a woman important to the young teacher. All she knew is that she was a deceased member of the Imperial Court Mages Corps, holding the title of third Arcana, 'The Empress' and a possible descendant of one of the Six Heroes of the Great Magic War, Salas-Silvers. She would surely needs to make more research about it, it would surely become a way for Glenn to not become an hindrance to their plans anymore.

'...Oh.' Then suddenly an ominous and cruel idea came to her mind, she then took out a shining violet crystal from her pockets, it was the notes of their previous experiments, where they had a little time to use Princess Ermiana's power during her kidnapping with the help of the manipulated Riel Rayford, a failed product of the Project Revive Life they were practicing, before Glenn intervened and saved the two girls with the help of his former coworker, 'The Star' Albert.

"Fufufu... Shall we torment him a little then?" The woman sinister and sadistic laugh resonated into the room as she decided to walk away, a precise idea in mind.

"Sera!" Glenn was running through the dark hallway of Fejite's city, him and his partner, Sera Silvers were surronded by Angel Dust terminal addicts, people who abused of a mortally dangerous drug and were now mindless zombies following the orders of their master. Both Glenn and Sera were send on a mission to stop them but they were overwelmed. Glenn was currently separated from Sera who was also surronded a few meters away from him, they couldn't join each other, though he wanted to help her each time he tried to move one of them approached him and he had to kick and punch them away. "Damn it!" His trump card, 'The Fool's World' couldn't work since they weren't under direct magic control so all he could do was using his fists and gun.

Then Sera noticed, that Glenn who was fighting the one in front of him couldn't see the one moving discretly behind him with a knife in hand... there was no time before collision so Sera ran from the ones around her and rushed over to Glenn, no time to use magic neither the correct time to warn him, not even the time to think correctly, she ran towards him with all her strength and extended her hand...!

"GLENN-KUN―!" When Glenn heard her voice, he turned around and all he saw Sera's long beautiful silver hair that he loved so much, being dyed into a pure red. A scene of some moments during their times together before this mission came back to his mind as that moment...

"I like it. Isn't your dream is really wonderful, Glenn-kun? To be a mage of justice that saves everyone... sometimes, I wish that there was someone like that around. So I think that you can take more pride in that, Glenn-kun."

"Hmph. Shut up, White Dog."

"Fufufu... Given the job we do, someday, I too..."

"It's all right. Don't worry, Sera. I'll protect yo―"

"Huh...?!"

"No, nothing."

"Huh~? What were you about to say~?"

"I said it's nothing!"

―Along with the realization that he failed to protect the vow he made to her...

"AH―!" Glenn gasped when he woke up from his nightmare―or rather the memory of the time when he was still working for the Imperial Mage Corps. The memory he wanted the least to remember, the death of his precious partner, his...

"Why now of all times...?" He wondered as he wiped the sweat of his forehead with his arm, running his free hand in his black long messy hair and then tried to control his ragged breath as he collected himself and try to think about the reason of the dream surfaced up again. It was a few days after the fight he had with his student Sistine against Jatice Lowfan, his former colleague and it ended with their win even though they ended up let him escape due to mana exhaustion. He took a few days' rest from his teaching work in order to heal his wounds correctly, the headmaster understood that and Celica, his foster mother, didn't forced him to go either.

When he tried to move his arm another jolt of pain assaulted him, "Ow...!" Look like that even with Rumia's healing White Magic, it would take time before he can go back to his usual self. Would she and Sistine be alright without him escorting her at their sides? It seems she would since during his absence, Albert was sending them to school every morning in his place (and in his usual weird disguises). Glenn felt relieved once hearing that, even if he didn't looked like it, he cared about his students a lot... but those thoughts quickly left his mind as he thought back at the dream he had this morning. But in the end he came to no possible conclusions of why he would have such a dream again.

'Was it because we fought against the Angel Dust addicts like before?' The only difference was that he and Sera lost that time but this time, he and Sistine, they won. Why didn't he won together with Sera? What was different from back then? Because he didn't had enough will back then? Because he fought alone against all back then? Because he wasn't paying enough attention, Sera was...! ...No, it must surely because he felt at peace recently, he felt himself at peace and got a little relieved of the sin of Sera's death thanks to Sistine and because of that, his consciousness was now punishing him for such a thing, because he was trying to atone himself by replacing Sera by Sistine―

"Damn―it!" He slammed his fist into the bed and regretted doing so right after, feeling the pain spreading itself in his fist he could only bits his lips in frustration. Then he looked at the alarm clock on his bedside, a new one he recently bought, the one when he decided that he'll stop come late to classes and teach those children seriously. It was also today that he was supposed to go back and teach them again, but now he turned his alarm off before it could even rings out, and went back to bed. Today he didn't felt motivated at all, was it because of that dream? Anyway, he'll have to apologize to Celica and everyone later. When he thought of that, he close his eyes and start to drift to sleep again...

"Glenn-kun... are you okay?" A soft and familiar feminine voice sounding like a music to his ears make him groan slightly. He seems to recognize the voice, but it wasn't possible right? Then let's just ignore it...

"Glenn-kun? Why did you turned your alarm off? Is there somewhere you needed to go?" Ah, here is it again! Such a voice makes him unable to sleep but also strangely relaxed... it rouses an unknown feeling he had long forgotten in his chest.

"Glenn-kun, can you hear my voice?" Then something started to shake his shoulder, gently not roughly, even though his body was sore most of the wounds have healed by now so it didn't hurted as much as he excepted to, but who was it on earth? Celica already went out and only the two of them were living here, so...!

"Glenn-ku―"

"GAH! What the heck do you want?!" Before the voice could call out to him again, he got himself up, pushed the covers he just put away and shouted to the person in front of him in a annoyed tone, who the heck was trying to disturb his precious sleep?! Even if it was Celica he won't forgive her! However... when he saw the appearance of the person in front of him, he completely froze, even to the point of forgetting completely his earlier anger.

"G–Glenn-kun...?!" The person―the young woman in front of him flinched slightly at his sudden intonation and looked at him with hesitant eyes. She was a beautiful woman with long silver hair with distinct green eyes tied up into a low pony-tail with a green ribbon. She has red tattoos imprinted on her face and her left arm. She wore a long green shaded dress and long green gloves that goes up to her elbow under her Imperial Court Mage Corps' uniform. A woman he knew really well, his only reason to stay in the Imperial Mage Corps despite their bloody duties that tarnished his childhood view of justice, her name is―

"Se...ra..." He managed to get out from his suddenly hoarse feeling throat as his eyes were about to pop out of its sockets so much it was widened.

"What is it, Glenn-kun?" She smiled into that all-familiar cheerful and ebullient smile of hers, the smile that he worked so hard to protect, and utterly failed...

'...There's no way.' He smiled bitterly to himself. Did he missed her to such an extend? Although that the him of the past would never admit it, he truly missed Sera's presence after her death, there hadn't been a single day without he thought about her. And now what is it? Hallucinations? Sera's ghost who came to haunt him?

"Glenn-kun? Why are you being silent all of the sudden?" Sera cocked her head slightly, the action reminded of a cute puppy. But Glenn then concentrated himself as he closed his eyes deeply and tried to erase Sera's illusion that were shown to him, after all now matter how real she looked like she wasn't real, isn't it?

"Glenn-kun? Are you still sleepy?" Since he felt that the hallucination was coming closer, he wanted to erase it by himself, maybe with that she would start to look transparent and disappear on it own? But wouldn't that makes him the one who would kill Sera by his own hand? No, don't think like that and don't get guilty! While trying to convince himself desperatly, he extended his hand and―

*Boing* He touching something that felt soft, round and a little elastic, he could feel his fingers sink inside the weird thing that he had in hand that seemed like a high-quality coushion.

"G–Glenn...-kun...?! What are you―" Hm? Look like the weird voice is still present? But now it seems to be more... delicate? But for some reason the thing he had inside his palm didn't seemed like shoulders he wanted to grabs and in order to discover what it was, his hand unconsciously played with it to discover what it is. No matter how much he squeezed it, it would shape in different shape before returning to its original round and bouncy form, was it perhaps a ball? Every time his hand rubbed that thing, a nasal childlike gasp would come from nowhere. No, it wasn't just a voice. Every time his hand moved, the hallucination in front of him would tremble as if it were itchy―or as if it were holding something in? Does that mean that it was going to disappear? Thinking like that, Glenn's start to also use his other hand and rubbed―

"...Ah!" Glenn's hand grabbed―

"...Uh...!" Glenn's hand squeezed lightly―

"G–Glenn...-kun...!" Then a shaking hand came rest itself on his arm, feeling a light and real weight on his arm, Glenn came to open his eyes and stared dumbly at the situation he got himself in―or rather the sitaution he created himself. To be clear, his hand were holding the fake(?) Sera's breasts, one in each palm... in normal times, Glenn would be acting like a lucky pervert like how he accidently intruded into the girl's changing room during his first day as a teacher. But this time, maybe it would be normal to say that he was too shocked to react like he usually do. Trying to get himself back in place he unknowingly squeezed both his hands still resting on the young woman's chest... and―

"―Hyah...!" She made a feminine response like that. With that Glenn got himself back and immediately let go both his hand and immediately backed off to the wall against his bed. "S–s–s–s–s–sorry! I didn't mean to to that―but I got lucky if I truly did it~ No wait! This is not what I wanted to say, Sera! Please just listen to my explainations calmly first and then I'll let you hit me as much you want―please go easy on me though, no wait this isn't that...!"

'Huh? Why am I panicking so much? It isn't the first time that such a situation happened to me and yet...' He couldn't act calm like he usually do with Sera, the reason itself was unknown to him. All he could do was waving his hands in all the sense and try to explain awkwardly his situation like a husband who had been found by his wife that he was actually cheating behind his back. He spoke more and more anxiously at the possibility that Sera might come to hate him. Sera was holding herself with both arms and was breathing deeply, her face was deeply flushed red and there were beads of tears at the corners of her eyes... to Glenn that sight was kind of seductive compared to the usual Sera he got to see in the past...

'Wait, what on earth am I thinking about in such a time?!' He quickly shook his head off his perverted thoughts which was a rare innocent that was coming from a open pervert like him.

Then, "...You don't need to say any more." Sera finally opened her mouth, her voice sounded like she was forcefully holding back her agitated emotions. Upon hearing her speak like that, Glenn conversely became more frightened of the upcoming result after all it was rare to see her like that having such a reaction even when he teased her in the past, "Sera, please listen to my explanation, I really―"

"Didn't I already said that you said enough!" She cried out with a trembling body, "I already knew those things, so you don't need to keep talking about it! I know that Glenn-kun isn't the one who would do that kind of thing in purpose, well maybe you did, but I'll forgive you this once so please let's not talk about it anymore!" Her cheeks weren't flushed because of anger but by pure embarrassment, upon seeing that, Glenn's face flushed in a same manner as he was trying to look for words to say in order to dissipate the awkward atmosphere they were currently in. "I–I see, it's good that you understood that, thank you."

"...You don't need to thanks me for that kind of thing, just don't do it again."

"Y–yeah, that's right... but still thank you."

"..."

"..." Look like the awkward atmosphere between them didn't dissipated like he hoped it would do, so the two couldn't hold each other's gazes any longer and averted their gazes towards everything but themselves.

'But I guess that White Cat and Sera are alike but also different.' Glenn used to nickname Sera 'White Dog' in the past because of her hairstyle that looked like dog's ears and did the same for Sistine and the fact that she ressembled Sera was also another of those reasons. But if it was Sistine, she would have send Glenn flying in the air immediately but Sera just forgave him, that show how dogs are more kinder than cats. But there was also that Sistine was flat, or let's say underdeveloped at best, and Sera was much more―

"―Sera does have much more bust than what I had excepted..." He blurted out to himself as he gazed at his hand and squeezed the air absentmindedly to remember the feeling that was warm and soft in his hand... and he was being unaware that he voiced out loud his own thoughts which had been overheard by Sera. Upon noticing his own mistake, Glenn quickly covered his mouth with his own hand and looked hesitantly up to Sera...

"...!" She had tears at the corners of her eyes and her face was in a even more deep shade of red than earlier, she covered her chest with both hands in embarrassment as her body start to tremble in anger. Look like he won't avoid it on this one, wouldn't he?

"Se–Sera...?" He tried to call out to her but it looked like that she was no longer able to hear him. Sera then took the pillow on the bed and start to hit Glenn with it on the head. "Glenn-kun, you dummy! Even though I already said I forgive you, why did you had to brought it back now?!" Her voice was filled with embarrassment and trying to hide it, she was keeping hitting Glenn with the pillow.

"Oi! Sera, stop it! I'm saying that I'm sorry! Give me a break already!" Though the strength of Sera allied with the softness of the pillow was not creating much damages than he had excepted, and of course she isn't the type of person who would blast someone off with magic just in order to hide her embarrassment like a certain cat. It was an adorable reaction coming from a puppy.

"Pff!" Before he knew it, Glenn start to laughs, at first it was a small chuckle and it soon become an unstoppable laughter. "Ahahaha!"

"Glenn-kun?" Hearing it, Sera stopped her awfully soft pillow attacks and looked at Glenn weirdly, however his laughter didn't stopped, on the contrary, it became even greater. "AHAHAHA!" He was laughing like the happy child he once was, innocent and pure laughter, not like the usual wicked laughter he was making in front of his class.

"G–Glenn-kun? Don't tell me that I hit you on the head... but this pillow is soft so it should be alright, right?"

"I–it's alright! Ahahaha! Ah, damn it! I can't stop laughing anymore, hahaha!" He couldn't even finish his sentence correctly before he start to laughs again and fell on the floor, ignoring the pain he roll on the floor while continuing to laughs. Sera looked at him strangely before starting to laughs at their situation as well, and so the two laughed, like old friends that had been reunited after a long time of separation, like how they used to be when they were together in the Imperial Mage Corps, it was so fun... that Glenn completely forgot that Sera Silvers was supposed to be dead and was only reminded that much later.

"So... Sera, you're real?"

"Glenn-kun, we've been repeating this pattern again and again, how many times should I tell you that I'm the real one unless you understand?" Glenn and Sera are now in the kitchen, where Glenn (yes surprisingly Glenn) was preparing breakfast for both of them, after both of them laughed their hearts out, they stopped when their stomachs started to growl and decided to continue their talk after fulfulling that primary need.

"But still... to think that Glenn-kun would cook for me one day, it's as if our roles have been reversed." Sera chuckled. Because in the past it was always her who cooked their meals in their times together.

"Oi oi, don't except too much, it is just mushroom stew." Glenn said as he served their meals on the table as Sera laughed in response, "Even so! Glenn-kun is usually so lazy and always letting me doing everything in his place would one day do that on his own accord, what brought such a change~?"

"It's just Celica who's noisy about it." Glenn didn't waited for Sera and start to eat on his own, of course, his share was far bigger than her own due to his more big appetite.

"Celica-san is raising Glenn-kun well! Here, good boy, good boy~" Sera leaned over and started to stroke Glenn's head as the latter sweatdropped slightly, "Why do I have the impression that I became the dog here...?"

"Eh?"

"No, nothing. Just start eating already, before it became cold."

"Ah, okay." And then Sera started to eat, without noticing that Glenn was staring at her in a rather serious manner. If the person in front of him was truly Sera Silvers, then does that mean that everything that happened up until now was just a dream? Of course not, the date, his teaching belongings, everything was there. Then...

'Then why on earth Sera is still alive?' Of course it wasn't that the fact he found it made him unhappy, he just found it suspicious with every incidents with the Researchers of Divine Wisdom and Jatice that happened previously, the possiblity that the Sera in front of him was nothing but a trap was quite high. However once the thought passed across his mind, he start to feel his chest aching for some reason, did he had trouble to think that the Sera in front of him could be a fake? She had proven many things that only the real Sera might know but some spies might infused those informations to her, there was an unlimited amount of possibilities...

"Glenn-kun?"

"Eh?" His mind returned to reality, the reality that he had been staring blankly at Sera who was eating her stew that he had completely forgot to eat his own, of course Sera noticed this and start to call out Glenn but didn't succeeded until just now, "What's wrong?"

"Ah, no, how is the taste?" He made up a quick lie hidden behind his smile.

"Hm, it's really good! If I knew that Glenn-kun had such skills then I would have asked you to cook more oftenly~" Thankfully, it seems she didn't noticed it.

"Don't count too much on it."

"Ahaha~" And the two resumed back to eating again. Once again, Glenn looked up to Sera, wherever she was true or not, he would have to confirm that the most quickly possible, so for now he would search hints on his own and then contact Celica later about it.

And so Glenn asked Sera while of course hiding the real purpose of his questions. He discovered that this Sera's memories went as far to before their last mission together so she didn't had the memories about her death, and this Sera came under the idea that she accidentally traveled into Glenn's life one year later, Glenn wanted to deny it in order to not make things even more complicated between them. But what's more frightening was that every of her mannerisms, her way of talking, her way of thinking, her everything... was exactly the same as the Sera in his memories. They were so alike that he couldn't deny the idea of them being the same person, that the Sera in front of him was real.

In the end, while Sera was washing the dishes, a thing she insisted to do despite his protests and another indirect way of showing the ressemblances between her and the one in his memories, he called Celica in a more faraway room during that time, his foster mother was quite angry that he didn't came to class in time and was still late but soon calmed herself when Glenn explained his current situation and asked for more details. "And that's what happened..." Glenn finished to the crystal he was using for communication in distance with Celica.

"And does she seems to be the real thing to you?" Celica asked.

"...So much that it almost frightens me." After Glenn's answer, Celica became silent and as if she was in deep thoughts currently, told him those following words: "I'll try to make research on my sides, you don't left her sides for too long even during one moment, we cannot be sure if she would try anything."

"Got it." And with that the call ended. Glenn went to search for Sera but hardly found her in the kitchen where she should be, the plates they used just earlier were all cleans and wiped dry correctly.

"Sera?" He called out but received no answer, so he called out one more time when he was running through the hallways, "Sera!" Now he felt a little back in the past where he was looking for Sera's presence during their last fights, knowing that she is so close but still unable to reach her...

'No! This is not the time to think about that!' He quickly shook off those thoughts out of his mind, maybe just as Celica said she was a fake that was preparing something nasty against him. It was then―

"Hm? Glenn-kun, I am here." Sera's voice could heard from behind the door of the studyroom. Fearing the worst thing to come, Glenn quickly burst the door open―to find... Sera reading one of his old picture books...?

"Eh?"

"Sorry Glenn-kun, I finished cleaning so I took the liberty of exploring a little, did you mind it that much?"

"Ah, well, no that's fine..." He was still a little dumbfounded by everything that happened up until now.

"Bu the way Glenn-kun, is this the picture book that inspired your dream?" Sera showed him the picture book she was holding and Glenn's smile fell off from his face; it was the story he loved the most in his childhood and hate the most currently, 'The Mage of Melgalius'.

Sera then scanned the book through the pages in order to find the illustrations, "I read it just earlier, it is really a good story." She then looked at Glenn hesitantly with a worried look on her face, "Glenn-kun, do... you still wish to become a mage of justice...?" Even though he knew that she was just asking of goodwill... or at least she looked like of doing so, the words she just pronounced triggered an enormous flow of emotions going through Glenn.

"Glenn-kun...?" Sera walked closer to him and before she knew it the book was snatched away from her hands. "Eh?!"

"I DON'T ANYMORE! SUCH A FOOLISH DREAM, I ALREADY GAVE UP ON THAT!" He shouted out of anger, all his bad memories were coming back due to these words, all the memories he tried to forget. It was only then he realized that he just shouted to Sera, and turned to her when he saw her casting her gaze downward, when he was trying to find a way to repair the broken atmosphere between them―

"I–I see... Glenn-kun must had his own reasons to do it... right? But still, I wonder what happened to this era's me for letting Glenn-kun alone like that." She forced a smile that was coming out more sad than anything. Her hands were holding the frames of her long dress and was trembling slightly, a thing that didn't go unnoticed by Glenn. The last part came out as a whisper, but it also didn't go unheard by Glenn who choosed to ignore it, because he was unable to answer her truthfully.

The silence between them lasted awkwardly, until Glenn who wasn't able to endure it and Sera's sad face anymore, said: "But I'm now working as a teacher at Alzano Empire Magic Academy." He didn't wanted to say that but if it could make Sera smile again, then...

"Eh?" She looked up, shocked and didn't excepted such a thing coming out from Glenn's mouth, "Glenn-kun, a teacher?"

"Yeah..." He averted his gaze from hers and rubbed his neck awkwardly. "I was originally replacing their homeroom teacher but now I work at a complete instructor."

"..." Sera's eyes were opened wide and she just looked at Glenn blankly, as if she was unable to totally comprehend what he just told her, then she looked down a few times before tugging shyly Glenn's sleeve. "...I want to try hearing Glenn-kun's classes."

"Eh?" This time it was Glenn who was shocked.

"I said I want to see Glenn-kun's teachings...!" She said a little louder, but her gaze was still downward as she gripped Glenn's arm slightly harder, her eyes were shining with interest like a child and Glenn felt himself go blank for a second. Of course it was risqué to take her someone who was supposed to be dead outside, he might be questioned later, but only one thought was eclipsing all the others; he wanted to see Sera smile again. "...Got it."

"Eh?" Sera looked up, hesitation in her gaze as Glenn gathered more of his resolve. "Though I am currently late, I may still come in time for the afternoon classes... so if it is fine with you..." He finds himself unable to hold her gaze again and looked away, scratching his cheek awkwardly.

Sera's face then showed a beautiful smile that was exactly the same as the one Glenn cherished deeply in his memories, "Thank you so much, Glenn-kun...!" And with that Glenn thought, even if he had to face many hardships afterwards, even if she is truly a trap meant to end his life created by his enemies, to be able to see that smile once again, made him being to go without any regrets.

'Though I still need to explain this to Celica...' Glenn silently hoped that he would survive this dangerous trial.

A/N.: I'm planning to do this fanfic into a three-shot, in the next chapter we'll have the White Dog meet the White Cat! No need for me to say who is who~! Some infos were taken from the novel spoilers, the raw version of the manga and the anime, otherwise the whole fanfic belongs to my imagination. Please review and tell me your opinion after you've read it~ By the way the mushroom moment stew is a reference to a side story of the novel!