My Own Science (Dr Stone Senku x reader)

Learning skills and showing off

[!!!Warning anime watchers!!! We're passing the anime at this point!]

The next morning, soon after leaving shore, you changed for a more sporty outfit and joined Tsukasa for your first training session. Because the level gap between you and the battle team was very big and they needed a lot of space, the two of you went to the storage unit that was for your instruments, now empty, and used it as a training room.

"To set up the rule." he said as you tied your hair.
"Heh, singular?"
"Yes." he nodded.
Because he didn't react to you little joke, you figured now was serious-time.
"When training begins," he continued. "your whole world will be this room and only this room. Nothing else exists, just you and me. Understood?"
You nodded.

"Good. First I need to see your level." he raised a hand, showing you his palm. "Punch here, and don't hold back."
"Are you sure?" you hesitated.
"Don't worry, I'm sure you know you won't do me much damage in terms of strength."
"Right..."
You stood in front of him and raised your fists. You took a deep breath before punching his palm with everything you got. He didn't even budge.
"Alright." he stepped away.
"H-how was it?"
"Very average I would say." he glanced at you, smiling. "I can tell you've never done much exercise, even before the petrification of humanity."
"True." you chuckled, scratching your cheek. "Sports never really appealed to me."

He turned back and walked up to the wall, picking up something out of the bunch he brought. He handed it to you, a jump rope.
"Here."
You took it.
"Use it until you can't take it." he casually sat down. "To see your stamina."
"Alright." you said as you went to stand in the center of the room and started jumping. "Shouldn't be too hard, I used to do this all the time when I was a kid."
"I suggest you don't talk while you do this." he smilee.
It was easy as first but quickly became really tiring. You'd never expect jumping to be so draining. After a while, you couldn't take it anymore and let yourself fall down, hanging your head back and panting.

"How... how long did I...?"
"Around a minute or so."
"Wh...what?!"
You heard him chuckle.
"You can take a break to catch your breath."
"Hah thank you!" you exhaled as you let your upper body drop, now lying in a starfish position.
You closed your eyes and there was just silence for a while.

"Are you good now?" Tsukasa asked at some point.
"Yep!" you stood up, wiping some sweat off your forehead. "Let's go!"
"Very well."
He walked up to you and that's when you realized that, while you weren't looking, he also tied his long hair up in a high ponytail.
'Damn that looks good.' you couldn't help but think.
"So," he said, stopping in front of you. "because it takes a long time to steadily build up strength and stamina. I'll first teach you different techniques to defend yourself."
"But, don't I need strength to do that?"
"Not necessarily, you can use your opponent's and turn it against them."
You frowned. You've heard of that in various shows, but in reality, you were pretty doubtful it was a real thing. He could tell you didn't believe him and decided to show you.

"Here." he grabbed your shoulders and gently made you turn around. "take my wrists and put my arms around your shoulders."
"Uh...like that?"
You were confused, you followed him on this. You tensed up when you realized the ambiguity of this pose. Feeling his chest pressed on your back made you blush.
"And now use your foot to sweep off mine and pull on my arms as hard as you can." his voice snapped you out of your thoughts.
"Really?"
"Yes, trust me. Do it on three."
"One, two, three!" you said together.

You did as instructed. You let out a yelp when you felt his large body rolling over yours. You stumbled but managed to stay up while Tsukasa fell on his back with a light grunt in front of you. You basically flipped him over.
"OOOOOOH!" you exclaimed with big starry eyes.
He laughed at your reaction.
"Good job!" he said.
"Sorry! Are you okay?!"
"I am, don't worry." he stood up, his eyebrows furrowed. "To be honest, I helped you a bit by jumping."
"Ow~ Tsukasa!" you frowned and punched him in the arm.
"Ahaha, I'm sorry. But I would've fallen on top of you if I didn't do it."
"Oh..." you thought for a moment. "Yeah, I would probably die if that happens."
"Right." he chuckled. "Let's try it again."