Also known as "1, 2 Fanclub", this is a song by MikitoP featuring Gumi and Kagamine Rin with illustrations from a younger Yokoyari Mengo. The song also gained notoriety for being covered by Hello, Happy World! for BanG Dream! Girls Band Party.
The song mentions a girl named Mika-chan who is a friend of the singers.
The following tags are aliased to this tag: 1_2_fan_club_(vocaloid) and ii_aru_fan_club_(vocaloid) (learn more).