He just has a need to protect you, He doesn’t know why but with his physic powers, he wants to protect you. Saiki could’ve cared less about you like he does with everyone. Like when you almost tripped over your feet, he used his physic powers to keep you sable. Even that time where you scratched yourself, the scare was gone in a few minutes. You always felt that someone reads your thoughts.

Now, your walking home. While Saiki secretly follows you to make sure you get home safe.