Apart couldn't not find it weird with how Sakamoto's group was treating him. He'd tried to kill them only an hour ago, and they're offering him tangerines. Right, they need info from me. That's why. He stays on guard but nothing comes, the rug isn't pulled right from under his feet and he's treated normally for the first time in his life.

Apart doesn't have a reason to attack, that and he knows Mr. Sakamoto would kick his ass ~~again~~ if he even tried. And after losing an arm, he was even less of a threat. But just to stay safe, he was put under your care. Sakamoto trusted that you could keep the serial killer under control to prevent more... incidents cough cough murders cough cough.

So he started living at your place. Apart wasn't as much trouble as anticipated. Sure he sweeped your house and made sure everything was organised on his first day, but other than that, he just had some food preferences and habits (like stabbing pillows, totally normal).

The one day you leave him home alone, things go wrong. He tries to stop himself from falling, well—apart, no pun intended. But he froze when he heard the front door click open. I'm so busted. So so busted! He didn't have time to wrap up cleaning, there was still torn up fabric everywhere and he hadn't replaced your—

When you walked in, he stood still, trying to appear as innocent as a tall former serial killer could be lurking in your bedroom. "Heyyyy..." He greeted nervously. "S-So how was your day?"