After a bit of bribing, Beatrice showed me a storage room within the library and basically donated every single glass-like bottle in there, and I began experimenting on them all.

I got rid of some wooden cups that got mixed in, since they'll just melt from the intensity of helium hydride, and I began pouring the liquid into the glass tubes, and to my surprise, it did not damage the glass at all. I assumed that Helium hydride would have around the same power as stomach acid, so I used the properties of stomach acid to determine a lot of helium hydride's properties.

I kept a wooden cup just in case, just to test the power of my compound. It melted right away and I decided to the yeet the cup in some corner of the library due to the lack of garbage cans in this place, hoping that Beatrice would probably not notice it. (I will regret this later).

After successfully sealing the opening using lithium hydride, I decided I would test it out later, since damaging the library would result in me being yeeted out of the library, and that would hurt a lot.

And so, began my long hours of making grenades.

Timeskippu*

When I finally finished, Beatrice informed me that it only has been 2 days since I started to stay in the Forbidden Library, and since I finished making my grenades (acid bottles), I began reading the books to learn a bit more about the world's history. I learned reading and writing with Ram in the first loop, while Subaru learned it in the second and third loops.

When I got to a place with a weird picture, I couldn't really decipher what it was, so I went over to Beatrice with the picture of the weird devil, and she began to explain. "That's Satella, the witch of Envy, who turned mad and attacked the world, destroying half of it in the process during the Great Calamity 400 years ago. She killed the other six witches bearing the sins, and some said she was starved for love."

"Wait, that's not quite right..." I said as I replied, finding many flaws in Beatrice's simple explanation. "I thought Daphne starved to death in that desert, and wasn't Typhon's remains still in Priestella?"

"Wha-wha-what?" Beatrice looked me, confused. "That's not right. The books state-"

Just on cue, my partner bursted into the library as Beatrice immediately turned to him and gave him an annoyed look. "Don't you know how to knock?"

"It's only been a day since I've told you about the curses." She continued as she decided to walk past Subaru. "Wait- you've really been cursed, have you not?"

"You came here yesterday?" I asked him, and he nodded. Guess I was too busy reading books, then.

"Guess you're both right, then. The shaman who cursed me was actually one of the villagers."

"You'll probably die within a day..." Beatrice said as she examined the curse.

"And what, are you not going to help me?" Subaru said as she thought about it.

"Why should I?"

"If I die, then Puck would be sad." Subaru immediately pulled out the Puck strategy.

"Bubby would not be sad if you died."

"Oh, no no no. If I die, Emilia would be at least a little shocked, right? And when Emilia gets hurt, Puck takes damage as well. What would he think of you when he realized you could've stopped it?"

Beatrice looked at me for confirmation, and I nodded before she stomped her feet in exasperation before agreeing to Subaru's proposal.

"I'll get rid of the spell that was placed on you now, I suppose." Beatrice said as she made a sphere of light as she continued to explain. "The spell is burned into you at the place the shaman touched, so that is our reference point."

As Beatrice began the treatment, Subaru looked confident as I remembered he made everyone touch a different part of him. But his confidence suddenly disappeared when we both noticed the black smoke rising from his hand.

"A... black smoke?"

"How abhorrent, I suppose. There. It's all done now." Beatrice said as she made the smoke disappear, and Subaru had a look of horror on his face.

"The place that the black smoke appeared, is where the shaman touched me, right?"

Beatrice nodded.

"Could the puppy actually be... damn it! I'll have to go back to the village!"

"I'll go as well." Realizing the situation, I grabbed my stuff as I stuffed them into a bag I received from Beatrice earlier and dashed after Subaru.

"We have to get to the village." Subaru said after we found Rem and Ram, who looked at us with a bewildered expression.

"Why? The village?" Ram asked, clearly confused.

Subaru lifted his hand and pointed it to the wound. "Beatrice said that whoever touched me here is the one who cursed me, and it was the dog in that little girl's hands. The villagers are in danger!"

"Roswaal-sama's orders are to let us stay in this mansion."

"But that's not the only he gave, is it?" Subaru questioned further, and Ram gave in as she approved.

"Rem will accompany you."

"But, onee-san..."

"I'll stay here to protect Lady Emilia and Lady Beatrice. Okay, Rem?" Ram asked again, and Rem nodded before she went to get ready.

"Subaru? What's going on?" Emilia came down, and Subaru immediately went to calm her down. I probably could've done it differently and instead just told her the truth and show her that we will be safe.

Ram walked over to me and looked at Subaru. "Barusu really is obsessed with Lady Emilia, is he not?"

"Well, he definitely is, but that's what keeps the man going, you know?" I replied as I gauged my own mana level, and decided that the grenades (acid bottles) definitely will be of help when it comes to fighting mabeasts.

"Alchemis, Cahya, we'll be fine, right?'

"Of course!" Cahya said as she appeared energetically by my side.

"We should be fine, unless one of the Three Great Mabeasts somehow appear." Alchemis stated as he continued to analyze my strength and other stats.

"I swear to god, please don't set up flags, Alchemis, you will doom us."

After the little discussion that Emilia had with Subaru, we waved goodbye as we set off towards Arlam Village.

Timeskippu*

When we arrived, many people were holding torches and looking around warily. Subaru immediately asked them what was going on, and teh first guy who was holding up a stick lit with fire answered him. He said that the kids has been missing and every adult is looking for them. Subaru's eyes suddenly went on alert, and he dashed towards their meeting spot, which then led us towards a fence surrounding the village.

After examining the area a little, Rem pointed to a weird looking device that looked like a Banishment Mechanicus (Please see Genshin Impact, Theatre Mechanicus Version 2.0 for more details). "The magic barrier is broken."

"And what does that mean?" The villager asked.

"It means that the mabeasts will storm the village. They live in the forest that faces us." Rem explained, and then he saw tiny footprints leading into the forest, and immediately panicked.

"We need to save the children!" He told Rem, but Rem looked confused.

"Why do you care so much about them?" Rem asked, as if she didn't believe Subaru truly cared. I mean, she still think he's still a witch cultist by this point.

Subaru then goes on explaining why he cared, and after a long story and some seriously moving story, Rem agreed to save them and took out her morningstar.

"Um... Rem... that is..." Subaru gulped as he saw the weapon that decapitated him twice.

"It's for safety."

"But... it's a ..."

"It's for Safety."

After a while, we arrived at a hill, where the children were laid out in a circle. Subaru immediately approached them as I checked their heartbeats. They were still alive.

"They're cursed, aren't they?" Subaru asked, and Rem began to use healing magic on them, which caused their breathing to steady, and Petra briefly woke up as she said something. I didn't hear it since I was tending to a kid that was a bit further, but Subaru looked extremely alarmed as I realized what Petra said.

"Petra said there's another one who's still in the forest." Subaru's mind started flashing as he remembered a blue-haired girl in disguise. "The blue-braided girl! I've got to rescue her!"

"On what grounds do you think that you can come out of there alive?" Rem asked, somewhat worried.

"I can use a decent amount of magic and I brought some weapons with me." I said as I took out a kitchen knife that I swiped while getting treats for Beatrice earlier in this loop. "And we have these." I proceeded to take out the grenades, and instead of giving me looks of awe, Subaru and Rem both gave me a questioning look.

"What are those?" Subaru asked.

"They're acid grenades! If you throw one at a mabeast, the glass shards would hurt them before the acid starts rotting and corroding their body before they die a painful death-"

"Yeah, bro, I get the generics. Thanks." Subaru took some grenades and I handed him the kitchen knife, but before we set off, Rem grabbed us.

"How will I know if you two will die or not?" She asked us.

"Even if no one else does, you can pick up my scent. The foul odour that hangs on me... the witch's miasma."

"Subaru-kun, how much do you know about-"

"I don't know. I really don't know a lot of things. But after all this is over, you can question me and Y/N all you want, we can promise you that." I nodded to his statement before finally Rem made some kind of pinky promise with Subaru, and we headed off into the forest.

"You know where she's at?" I asked Subaru, and he gave me a shrug but he somewhat seemed to be going in the right direction.

"If it's the dog that cursed me yesterday, there's no way we might lose, right?" Subaru asked me, but I shook my head in concern.

"Mabeasts are unusually large, so you might wanna take that back." I said as we came to a clearing and I saw Meili, who rested on the ground, seemingly unconscious as Subaru let out a sigh of relief. The short peace that we had was suddenly broken when a giant dog stepped into the clearing.

"Why.. are you so huge?" Subaru said as he shuddered. "And... was it waiting for me to come here?"

"Subaru, this is no time for questions! Get ready to fight and protect the girl!" I yelled as the mabeast burst from a tree at us after blending in with the shadow, but before it could bite down on Subaru's arm, he caught it with the knife. I shot El Goa at it before it weakened, and Subaru managed to kill it by slamming it into a tree branch, which struck its organs before it died.

"That was... harder than I thought it was going to be..." I said, panting as more mabeasts appeared as I saw the red eyes staring at us from the shadows.

"Subaru, take the girl and run!" I yelled as I told Alchemis and Cahya to get ready. "I can buy you a little time before I catch up!"

"Okay, then!" Subaru said as he took Meili and ran, while the three of us readied our spells.

With a certain spell in mind, I concentrated the fire mana around me as I held out both of my hands, and yelled as I manifested the barrage of fireballs. "Ul Goa!"

Alchemis followed suit, and also sent out a barrage. "Ul Goa!"

"El Jiwald!" Cahya yelled as her heated light beams blasted into the ranks of Wolgarms, and it seems that we've defeated around 30 Wolgarms.

"That's not all of them, is it?" I said as I began to spread hydrogen around the clearing, leaving only one spot in the direction that Subaru ran in.

"Three, two , one..." The mabeasts attacked as I lit the gas. "Wall of flames!"

As soon as the monsters caught on fire, I ran in the direction that Subaru ran in, only to find a clearing at the bottom of a path, where Subaru seems to be injured with Rem tending to him. "Jiwald!" I said as I shot the four attendants of the dog that seemed to be the leader, and he sent a wave of mud at me before I activated a new ability of my authority.

Spreading the fourth element in front of me and using elastic force to stretch the material before it fully forms into a solid, I have created a durable barrier that reflects attacks. "Beryllium Mirror- Total Reflection!"

The mud wave gets sent back at the dog, along with a few of my helium hydride acid grenades. After dodging most of my attacks, the dog stares at me with an angered expression before leaving. I look around for Meili, but I can't see the girl anywhere. "Dang that girl and her mabeast controlling powers!" I cursed as I rushed down to help my friend.

"Subaru! Are you okay?" I asked as I jumped down into the clearing, now littered with mabeast corpses. Rem was using healing magic on an unconscious Subaru as she sniffled.

"I couldn't... protect him..."

"Rem, it's not your fault, okay? Subaru jumped in to save you, I presume?" She nodded. "Then don't let his decision go in vain, right? Come on, we've got to get him to the village."

After one exhausting battle with mabeasts, I returned to Arlam Village. Tired from carrying Subaru on my back, I fell head first onto the first not-so-hard surface as my legs buckled underneath me, and the wave of darkness rushed over me, once again.

Name: Y/N L/N

Authority(ies):

Authority of ? (Commonly known as Authority of Elements):

-Vacuum Trigger: An innate ability stored within the tesseract-shaped ? Witch Factor, allowing the user to spring themselves from unconsciousness when the mana fluctuations around them changes drastically, as a built-in self-defence mechanism of the body.

Elemental Masteries:

Hydrogen Mastery: Stage 1, 850/2000 complete. (Spells: Hydrogen Gas Formation, Hydrogen Gas Wall, Hydrogen Gas Mist)

Helium Mastery: Stage 1, 665/2000 complete. (Spells: Helium Gas Formation, Helium Hydride Acid Creation)

Lithium Mastery: Stage 0, 690/1000 complete. (Spells: Lithium Hydride Solid Formation, Lithium Pellet Bullets)

Beryllium Mastery: Stage 0, 645/1000 complete. (Spells: Beryllium Solid Creation, Beryllium Mirror)

Spirits: Alchemis- fire spirit (turquoise), Cahya- yang spirit (white)

Magic Spells:

Goa- shoots a small ball of fire from the tip of the user's index finger when imbued with mana.

El Goa- manifests three fireballs around the user, and shoots them towards the opponent at high speeds

Ul Goa- The user fires a large amount of powerful fire bullets. A powerful flame scatters when the bullets land.

Jiwald- fires heat rays from the user's fingers.