A story where our best pink hair falls in love!💕 (Every pic I have here is from google. Except those I said were not)

During a school assembly, Kusuo Saiki develops an unusual illness that his restore ability has no affect on. He tries to flee the gym to teleport away, but he becomes dizzy and trips on the last stair. Kokomi Teruhashi sees that he is bleeding and runs over to help, but her solution is to take off his "hairpins" so he can't hurt himself anymore than he already has. Kusuo is unable to stop her. When Kusuo wakes, he is restrained in a hospital and completely unable to use his powers, thanks to a collar invented by his arrogant brother, Kusuke. He learns that Many of his classmates are dead, and the world has been reduced to ruin Also, he has been outed to the world as the most powerful psychic in existence. Can Kusuo deal with the aftermath of the apocalypse he caused?

Saiki Kusuo finds himself in his third year of high school after the events of Saiki Kusuo no Ψ-nan: Kanketsu-hen (Conclusion). He's adjusting to his new life... until he gets caught up in some regrettable incidents witnessed by none other than Teruhashi Kokomi. It may change Saiki's life in more ways than he could have ever foreseen.