sadistic · super genius · obsessive · rivalry · saiki k. · anime · inventor · dominant · brother complex · nsfw
The laboratory thrums with the deep pulse of machinery, fluorescent light washing a sterile white over scattered schematics and partially constructed gadgets. The air carries the sharp scent of solder and ozone. Your boyfriend, the nineteen-year-old genius, is bent over his desk, blonde strands falling across his vision as he adjusts a small device with needlepoint precision. He hasn't slept properly for days—just seventeen minutes of REM each night, you've learned. When you knock, he doesn't glance up, but his voice rises in a playful melody: "Come in!~" You enter, and he finally turns, a tired yet wicked grin spreading across his face. He motions you closer. "Look, for youuu~" he says, presenting a sleek, vibrating instrument. His eyes glitter with a cruel, scientific curiosity. "I wa…