After Seilah's confession on how she really feels about Natsu, understandable he was the first human to give her a chance when any other person would want her dead, although many tried in her life time but all were brought down and one reason for that, none had the strength to do it but what she had witnessed and experienced Natsu had that strength, but instead he spared her even saved her from dying when Kyoka betrayed her.
there is when she found a real friend and a kind of friend Seilah fell for and was going to tell her how she feels. she exhaled leaving the Erza's and her room with her resolve and went back to Natsu's room and knocked which he opened it.
"Yo Seilah" Natsu answered.
"Can I talk to you?" Seilah said with a serious look.
"Aye, can you two leave us we'll meet you at the restaurant" Natsu turned to Gray and Lucy the two nodded and headed to the door.
"You to Happy, annoy Lucy or pig out on fish" Natsu said with a stern gaze
"Aye sir" Happy saluted and came up to them.
"How did you wake him up he was sleeping like log before?" Seilah asked the two.
"more like a broken down bulldozer" Gray grumbled.
"This coming from the underwear model who snores like a dying walrus" Natsu shot back.
"dude you sound like a freight-train" Gray pointed out with a scowl.
"I could do this all day but Seilah needs to have a word with me so lets move on" Natsu frowned with order in his words and eyes.
"Of course see'ya, to answer your question Seilah we mention food in his ear and he woke up" Lucy nodded pulling Gray along.
"Yeah mention food or attack he immediately wakes up" Gray stated as Lucy pulls him out of the room.
"So what do I owe the pleasure Seilah?" Natsu asked as he closed the door behind them shut.
"Well I need to confess something" Seilah spoke "when you saved me and the time we spent together, I could feel myself getting attached to you" she blushed.
"Nothing to be bashful about when your friends with someone it's possible to get attached, and truth is I got very attached to certain people in the Guild, your one of them" Natsu stated.
"Well weird question who do you really like in the Guild, or love?" Seilah asked.
"Oh well not to upset you or anything, but I love Erza, Mira, and" Natsu paused "You" he admitted.
"You love me?" Seilah exhaled deeply.
"I do, you see when your a Dragon Slayer if your dragon instincts or nature choose someone, it means the inner dragon can trust you and draws you towards them, like it did with Erza and Mira, now my instincts are accepting you to be one of my lovers" Natsu told her with a smirk "I knew how you felt about me, just wanted to see if you'd speak up" he admitted.
"How did you-" Seilah started but stopped when Natsu tapped one of his ears.
"When everytime you saw me or I was near you I could hear your heart beat faster, it sounded like hundreds of butterflys flapping their wings" Natsu told her "and the reaction I got from you when, I did something impossible and stupid you don't react like that unless you really like someone" he told her "and I pieced it together, second Erza's and Mira's hearts both did that after seeing me after 7 years, and if there was another dragon slayer in the Guild they would say my heart was the same way" he said.
"I envy a Dragon Slayer's abilities" Seilah shook her head with a smirk.
"So sorry if I said the L word before you, but I'll pretend I didn't say it first so rewind" Natsu said making a reboot sound with his mouth "what do you feel about me?" he asked.
"Well as I said when you offered me a happy life, I was stunned and surprised you'd give a Demon a chance" "But I know why because despite that hard and rough outer shell your a good man with a kind heart, it maybe unforgiving and unfeeling towards enemies at times but you still allow compassion and kindness through" Seilah explained "Then the time I spent with you I grew attached to you and that turned into something else" she told him.
"Go on" Natsu replied.
"Natsu-Sama" Seilah spoke again "I love you, I ask for nothing but you to love me in return like you do with Erza and Mira-San" she finished.
"as long as you don't mind sharing me with others" Natsu smiled.
"like I said as long as you love me" Seilah smiled with happiness.
"Well I just have one thing to say" Natsu with a serious gaze "Seilah I would love it if you'd join my small Harem or Horde whatever you like to call it, I promise to love you as much as Erza and Mira, and protect you from anyone who tries to harm you, so will you?" he smiled.
"I do" Seilah smiled wrapping around him in a warm hug, with a big smile the two closed their eyes and kissed passionately, as Natsu glided his arms around her waist and she placed a hand on his jawline sealing the chain between the Demoness and Dragon Slayer and Fire Dragon Prince, the two separated with loving smiles.
"I should mention to you and the others, if we do the deed and place the mate mark on you" Natsu said "You have enhanced senses like mine but not as strong and heightened magical and physical abilities as well you just focus your magic in the mark and you can gain enchanted abilities" he smirked "although there is a side effect but it's only small when you power down the enhancement, you'll get blurry vision and muffled hearing and sore body but it only lasts 2 seconds" he told her.
"How does it work?" Seilah asked.
"Well just focus your magic in the mark, the mark will glow a faint scarlet orange and the magic within the mark will merge with your magic, but as I said there will be some discomfort but only temporally for 2 seconds" he explained.
"is there limits?" Seilah asked.
"Well you won't exactly have the full abilities I have, but they will be above any normal mage and your magical abilities will be greater than before" "but it will only last 30 minutes" Natsu informed.
"Well at least you let me know ahead of time" Seilah smirked.
"Well of course you don't just place a mark on somebody and not tell them about it on how it works and the side effect, thats just irresponsible" Natsu replied "I'm crazy sometimes and still an idiot at times and I admit still a hothead, but I'm not irresponsible" he told her.
"Well should we do it now, The Deed" Seilah asked.
"Well I don't mind but lets not hit the gas like that, lets go on a date and after we can lock the chain because are friends are expecting us, but you have my word you and me will Do it, but at my house" Natsu said "and just to be clear on my promise" he said before pulling her back by her waist into another passionate kiss which she immediately pulled him in tighter by looping a arm under his arm touching his shoulder and the other the back of his neck making the kiss deeper the two separated.
"Careful Natsu-Sama I might just rip our clothes off and do it right now" Seilah smirked playful.
alright young lady lets join the others" Natsu said
Smak! sounded followed by a surprised yelp as Natsu gave Seilah a flirty slap to her rear end with a hand as the headed to the door.
"being bold Eh?, Oh I love our relationship already" Seilah smirked sultrily.
Natsu and Seilah arrived at the restaurant
"Oh there you two are" Gray spoke.
the group Natsu, Simon, Millianna, Wally, Sho, Erza, Seilah, Gray, Lucy and Happy were sitting around a table eating and laughing. minutes later the group says goodbye to one another.
"Hey Natsu thanks for everything, for taking care of Erza and bringing that nightmare that held us for years down, and saving me from that Owlman" Simon smirked "I'm honored to call you my friend" he smiled.
"Feeling mutual buddy if you need help with anything let me know" Natsu smirked back.
"Actually there is one thing, if you happen to come across a girl looking for me, let me know she's my little sister and you will find her better than I can, I'm going to travel for her but please let me know if you find her" Simon spoke.
"You have my word if I do find her I'll return you to her" Natsu nodded.
"Very good" Simon smirked, Erza's friends left on a boat the groups waved goodbye.
"Oh and make sure you tell Erza about the barbecued owl!" Simon called out.
"Yeah I know" Natsu sighed.