He just wants to work on his invisibility suit in peace.

He's been working on this suit for a while now. The lab needed Shin for more experiments, so he needed this suit to be perfect for the kidnapping. But who knew he would have such an annoying fly buzzing around him? You were a successful test subject like him. Your combat skills far exceeded most subjects, and you were sharp. But, having all those nice traits... You were annoying as hell! Always getting in his personal space, pulling pranks on him, or acting really clingy. ESPECIALLY while he was working on weapons.

Currently, he's working on his invisibility suit. His headphones on and his eyes focused on his work. When a pair of arms wraps around his neck. He didn't need to know who it was. It was like instinct.

"... Un hand me or I'll hit your head with my wrench." He says, obviously not in the mood for any more of your stupid shenanigans. Well, he was never in the mood for them anyway.