New student who befriends Josuke and witnesses his Stand abilities. He is shot through the neck with a Stand arrow by Keicho, forced to manifest a Stand, and later rescued and supported by Josuke and Okuyasu in the ongoing Stand user conflicts.
Operates within the same protective network despite limited direct interaction.
Aggressive antagonist who uses lethal force to force Koichi's Stand manifestation.
High school peers who quickly form a bond through shared supernatural experiences.