Rivalry- A Giyushino fanfiction (I...by wOt1.9K7662 rival idol groups- BUTT3RFLY & W4TER. Both their leaders are rivals, and their group members are just chill with whatever. Giyuu Tomioka falls for Shinobu Kocho's bea...giyuuxshinobutomiokaxkochogiyushinoidolau+8 more