The Acid That Melts My Heart (Senku x Fem!Reader) Dr. Stone X Demon Slayer

27

Y/n and Lavender were cuddling each other in the infirmary, Y/n couldn't sleep. The h/c hair colored girl was worried for her boyfriend because she dragged him in her own mess. "Y/n..." Lavender called out softly, Y/n lifted her head up to give Lavender a look of curiosity.

"I think I'm still not ready to confess to Precious... What if she's straight?" the blonde asked, Y/n could only sigh and shake her head, seemingly disagreeing with her way of thinking. "Lavey, listen. There's no harm in trying, right? You have a chance with Precious. Well, a slim chance at that," the scientist whispered. Lavender gripped Y/n's neck which made her unexpectedly give out a moan.

"That's supposed to make me feel better? Come on, Y/n," Lavender pleaded.

Y/n could only smile and pin down Lavender on the bed playfully. "I'm not that good with love advice. How about let's contact Gen?" she asked, Lavender smiled brightly. "Yes! Of course! Why didn't I think if that?" she asked the other girl who now got into a meditative position, trying to contact with Mentalist from the Kingdom of Science.

Once Y/n felt cracks forming on her neck, she smiled and put her pointer finger on her lips, making Lavender smirk.

"Hey, Gen!"

Gen flinched, the sudden voice of both Y/n and Lavender startling him as he lay awake in his tent. "O-Oh, hello there Y/n-chan, Lavender-chan," the Mentalist greeted, a small smile present on his face. Lavender smiled and took over 'the phone' to ask Gen her questions. "Did we interrupt you or something, Gen? If we did, we do apologize," Lavender said, Gen could only laugh a bit.

"Hey Gen, if it's okay, can Lavey ask for love advice?" Y/n asked, Lavender could only blush at the side. "Y-Y/n..." she whispered awkwardly.

Gen's eyes lightened up and sat up on his bed. "Sure thing! But I don't want to wake up Ukyo-chan and the others so I'll be going outside the Perseus for a bit," informed Gen. Y/n and Lavey saluted the AOT salute to Gen and giggled. "Aye aye, sir!"

After Gen had made it outside the Perseus, he made his way under one of the trees in his surroundings and sat down under it, the starlight giving a soft glow to his face as the girls giggled softly.

"So, what is it that you wanted to ask about, Y/n-chan, Lavender-chan?" the Mentalist asked, urging the two to tell him what they have been wanting to ask him about. "Well, you see... Lavey here likes Precious-" "Y/n I think I'm starting to regret this." "Oh girl, shut up. Gen's the best at love advices. You should be lucky to be in his presence!"

Gen laughed awkwardly. "Well, you aren't even at my presence but if we are talking to each other right now at this moment, then I'll count that in," said Gen. Y/n and Lavender smiled. "Well, I need advice from you, Gen," Lavender spoke, Gen only nodded. "Go ahead. What is it?"

"How do I man up and ask Precious out?" asked Lavender curiously. Gen raised a brow, a small smile on his face. "So you're Bisexual, Lavender-chan? How sweet!" Gen chirped. Lavender covered her reddened face with one of the pillows on her and Y/n's shared bed. "Y-Yes... But, since I'm Y/n's guardian and we have to face a battle, I don't want to drag her into it. Even if she did say yes, I still won't be comfortable with it. But if she said no, I'll be both glad and sad at the same time. I don't know what to do! Please help me!" pleaded Lavender. Y/n pursed her lips into a straight line, Gen was also puzzled but he was doing his best by thinking of a solution.

Gen snapped his fingers with a wistful smile. "Don't ask her out yet until the right time. Remember what Tyler and Amber said?

No one knows about this battle except for everyone who works in the NASA Organization.

Don't you think it's best that she hears about this battle from you instead of letting her finding out herself? And that'll make it much more harder for her to accept your confession if you'll make her think that you don't trust her that much, right? Lavender-chan?"

Y/n pouted. "That's true... Should we let her know?"

"Yes, Y/n. Let the both of your friends know..."

The three of them flinched at the familiar voice, Y/n smiled and looked beside her.

"Amber!"

"You should let all of you're friends know, Y/n. They can be of great use to you," said Amber as she sat down on Lavender and Y/n's shared bed. Y/n took Amber's long, brown hair in her hands and started to braid it. Lavender did the same. Amber smiled and just let them do as they both pleased. "But, why's that? Isn't it safer to keep them in the dark?" asked Y/n.

Amber twiddled with her fingers. "Your friends are the most important people when you're in battle, dear Y/n. They will help you in anyway they can."

"But why?" asked Lavender curiously as she took her hair tie and tied it on Amber's braid that she made. "There are supposed to be 4 guardians. Senku's guardians are already completed and you are well aware, right?" asked Amber as Y/n smiled.

"Well, they are the Five Wise Generals of the Kingdom of Science so it's already obvious that it's them. But who are Y/n's other guardians? She already has me but the other three...

Who are they?" asked Lavender, twirling her hair around her fingers.

Amber closed her eyes, wist filling up her being.

"You'll see at the right time..."

~Time Skip~

Y/n and Lavender were now put to sleep by Amber and Lesley. Lesley put sprays in their bags as to what Amber instructed her to do.

"Are you sure this is how the prophecy goes? Jake still didn't have any visions," asked Lesley, the woman beside her just smiled and kissed the both of the girls goodnight.

"Yes. Our other Guide has seen much more than that."

"You found her?"

"Yes. And it seemed that she wanted to return after all."

"She changed her mind? That's a bit out of her character, though."

"I thought the same and so did Tyler. But it turned out she wanted to keep the Destined Saviors safe."

"Wow, her redemption with him really changed her."

"True...

Let us have a good night's rest...

Gather up all your strength and prepare to fight for our battle."

A/N: I haven't updated in so long, sorry if there's no interaction with Senku and Y/n here, I'll make up for this soon.