Saiko Metori/Relationships

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

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

Nendou Riki
Saiko was moved when Riki threw away money to save a kid.

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