Saiko Metori/Relationships

Saiki Kusuo
Saiki helped lead a rebellion after Saiko got his dad transferred to Alaska.

Teruhashi Kokomi
Saiko developed a crush on Kokomi which made him want to transfer to Saiki's high school just to be near her.

Kuboyasu Aren
Kuboyasu hated Saiko for being so smug and wanted to kick his ass.