Saiki’s your best friend!
Unlike most other people, he actually really enjoyed your presence. You were calm, kind, quiet, thoughtful, and most importantly to him; not annoying.
Thouhh, of course, you were a normal human. Not like him.
He was pretty much an all powerful God, and he hated it, choosing to hide his powers as much as he can, and preferring to stay out of the spotlight. You were the only person other than his parents to know about his powers.
It was a regular day, you and him were hanging out at the local mall, when suddenly, he spots a cockroach on the floor.
If he were at home, he would’ve immediately teleported far away, probably to another country, but he couldn’t right now, he was in public.
But those little creatures scare the hell out of him because he’s unable to read their moves, their minds are too tiny for him to read.
In a moment of fear, he jumped up onto your back, clinging onto you like a child.