Constant Variable (Senku x Reader)

11: Clear World

"Your strike is too shallow!" Kohaku shouted as she easily dodged and blocked both the brothers' attacks. "One of us must win the Grand Bout so that we can give Ruri-nee the cure-all medicine!"

Meanwhile, the rest of you were watching the trio practise from the science when Senku spoke up with a small smirk. "All right, so while Gen's out deceiving Tsukasa, let's get started on that cure-all drug."

"Yeah!" Both you and Chrome yelled in unison, wide grins filled with determination spreading across your faces.

"What are we making with science next?" The brunette questioned as he turned to the green-haired scientist, brown eyes sparkling with eagerness.

The corners of Senku's lips turned into a small, serious frown and said, "There's a material that's just as important for building a civilization as iron. The first man-made material in history, synthesized using science...Glass."

"What's that?" A confused Chrome asked, "Aren't we gonna make all sorts of drugs now that we have electricity and all that?"

"Yeah, we are," Senku answered, but provided no further explanation.

Furrowing your brows, you mused over your friend's words, (e/c) orbs lighting up with understanding. "If we're making the cure-all drugs, we'll be dealing with chemicals and when it comes to that, glass is the best material for that."

"Well said, my lab assistant." Senku grinned as he lifted a hand, ruffling the top of your head with a small, fond smile.

Two pink spots appeared on your cheeks as you beamed at the scientist's praise. Senku let out an amused chuckle at your reaction before facing Chrome to explain. As (Name) pointed out, clay pots are no longer going to cut it for our happy chemistry experiments if we want to make the cure-all sulfa drug. Glass can stand up to just about any chemical. Glass is the foundation of chemistry. Ten billion percent easy to process! Yet it's tough as hell and durable! You can even see through it, which means you can observe the chemicals inside."

"Really? Oh, man." Chrome breathed out in awe, hooked by what Senku had just said.

The corners of his lips stretched into a wide smirk as he turned to look at Suika, who had been quiet all this time and continued, "To top it all off, once we have glass, we might finally get a chance to yank that headpiece off of Great Detective Suika and see her true face."

Before anyone could say or do anything, Senku reached over and pulled the watermelon mask off the young girl, startling both you and Chrome.

"Wait, Senku!" Kohaku, with her keen vision of 11.0, saw everything from where she was still training with the brothers and immediately rushed over to the group, snatching the mask away from the scientist. "Suika doesn't want her face to be seen!"

Senku simply let out a grin and said, "Take a good look."

The three of you glanced down at Suika and were surprised by the innocent appearance with big, sparkling brown eyes and a cute bowl haircut that greeted all of you.

"Wow, Suika! You're perfectly adorable!" Kohaku gushed with heart-filled eyes, completely enthralled by the younger blonde's overall cute look.

At that moment, when Suika's head turned in everyone's direction, her face scrunched up and the innocent expression was replaced with one of like an old person; causing both Kohaku's and Chrome's eyes to bulge in horrified shock.

"What the hell?!" Both of them exclaimed in unison, taken aback by the sudden change.

Meanwhile, you sucked in your breath when realization dawned upon you. Turning to Senku, you whispered, "Senku, do you think that Suika...?"