My Own Science (Dr Stone Senku x reader)

Kohaku

You and Senku ran for a while before you stopped when you saw the fallen tree. The most surprising part was the blonde girl lying next to it.
"Hey! Are you okay?!" you exclaimed as you ran towards her along with Senku.
She looked at you, obviously not recognizing you, but she did recognize the boy who was with you.
"You!" she exclaimed. "You're the sorcerer who protected that woman... you survived!"

Senku jammed his flag under the tree to try and use it as a leverage.
"Don't waste your breath saying pointless things now!" he said. "I'll listen to your introductions all you want later. For now preserve tour breath." he let the flag fall, seeing as it was useless, and turned towards her. "Can you hold on until night?"
She blinked twice, not understanding what he asked such a question. You got it though.
"What's your plan?" you asked.
"If she can't," he explained. "I'll go all out with the little gunpowder I have left to try and blow this off of her." he looked back at her, addressing her directly. "But if you can hold on, then it'll take enough time to make you wanna die, but I'll be able to save you 10 billion percent."

A few seconds passed without a word from her. He raised his voice.
"You're the only one who can answer, and I won't know until you tell me! It's one or the other! Now decide! Which is it?!"
"...My bones and organs are fine!" she finally said. "I can hold on!"
"(Y/n), help me out!"

Senku spared no time taking action and you spared no time following him. He took his axe and began to chop a large branch of the fallen tree into three big wheels. He instructed you to make ropes and told you how to do it.
"This thing weight one ton," he explained as he carved the wood pieces. "by lifting only one end, we only need a balance of 500kg. With our weights combine, that already makes around 100kg. So with three of those, we can easily make it."
After he was done with the wheel-things, he joined you for the making of the ropes. You already made some good progress.
"Nice job (Y/n)!" he said as he sat in front of you to finish them.
"Thanks!"
You glanced up at him, he was too focused on his task to notice. He had that look of pure dedication to his craft, despite the exhaustion and the sweat dripping down his face.

'Gah he looks so cool!' you thought before returning to your rope.

"Here, rub them with it." he handed you the soap after the ropes were completed. "If we don't, they'll burst into flames."
After you used the soap on the ropes, making them slightly slippery, Senku began to assemble his contraption. And he seemed to enjoy it, as always. He giggled.
"It's an all-star line-up of the great Senku-sensei's inventions!"
As it started to come together, you began to understood.
"Oh~ I see what you're doing."
"(Y/n), climb that tree with me!"
"Aye Sensei!" having saying that, you giggled.

"I'm glad you remember it." Senku smiled once you were at his level.
"Well, we learned it in elementary school." you smiled back.
"Invented in some few hundred years BC by ol' Archimedes. With this, even the garbage strength of two highschool freshmen could be converted into superhuman strength that could leave even Tsukasa and Taiju all pale. The pulley!" he exclaimed as he set up the last rope. "Grab onto me!"
"You sure?"
"Just do it!"
"Okay..."
You jumped and wrapped your arms around his neck from behind. As soon as you got a tight grip, Senku let himself fall down, holding on to the rope and putting the pulley into motion. Slowly, the tree was lifted up.

Right after you touched the ground, you let Senku go. And he seemed glad you did so, he was coughing and panting. You felt a bit bad about it.
"Sorry, maybe I could've been softer on the jump." you scratched your head.
"Nah," he raised a hand, standing up straight. "'t was all part of the plan."
"All according to keikaku?"
He looked at you to see a wide smile on your face. He couldn't help but join you on this.
"What does keikaku means?"
"Translator's note: keikaku means plan!"
He puffed a chuckle and you both laughed together.

"It's incredible..." the blonde girl said. "It's wasn't the wisdom of this Archi-whoever. It was you... Taking one step at a time, solving one problem after the next and weaving the answers together. Your unwavering faith..." she looked at Senku and smiled. "My name is Kohaku. It seems I've taken a liking to you."

Senku's face froze and he tensed up, or rather cringed at her words. You on the other hand, frowned.
"I'm sorry what?" you eventually said.