Ooshiba Kousuke Guide

: Driven by a deep-seated urge to shield Masahiro from harm.

: Known for his strength and history of taking down gangs. Ooshiba Kousuke

: Bridges the gap between being a best friend's brother and a romantic partner. : Driven by a deep-seated urge to shield Masahiro from harm

: Serves as a math teacher, adding a professional layer to his role. Ooshiba Kousuke

: Significant differences in his portrayal across media.

: Provides a stable alternative to the delinquent life Masahiro once led.