Mariko Tsukishima/Relationships

Mariko's Brother
As mentioned in Mariko's profile, Mariko's brother inspired her to become an idol. Mariko's brother is an idol fan, and often made her attend some concerts with him.

Subaru Hoshizora
Was one of the first people Mariko met when she first arrived at Kirahoshi. Mariko likes Subaru's guitar playing.

Shiro Shirokita
Like Ayame, Mariko is a huge fan of Shiro's, she she knew her from Fuchsia Bear. Mariko greatly admires Shiro, and tries to take any opportunity she can to have a conversation with her. She also sits next to Shiro in one of their classes.