Information:
3 nin Matsuri means "3 Person Festival" in English. They were part of the annual Hello! Project Shuffle (which also consisted in this year of 7 nin Matsuri and 10 nin Matsuri), which involved taking various girls from Morning Musume and other groups, and mixing them into different groups to perform a single song. At this time Ishikawa Rika and Kago Ai were in Morning Musume, and Matsuura Aya had released her first two solo singles. Bloodtypes: Ishikawa - A, Kago - AB, Matsuura - B