Mimori Suzuko, Tokui Sora, Sasaki Mikoi, Kitta Izumi - Nazo! Nazo? Happiness!!
Suzuko Mimori, Sora Tokui, Mikoi Sasaki, Izumi Kitta - Party Party!
Milky Holmes (Mimori Suzuko, Tokui Sora, Sasaki Mikoi, Kitta Izumi) - Ameagari no mirai (Tantei Opera Milky Holmes)
Mimori Suzuko & Tokui Sora & Sasaki Mikoi & Kitta Izumi - Hyper Milky Hour
Mimori Suzuko & Tokui Sora & Sasaki Mikoi & Kitta Izumi - Hyper Milky Hour (off vocal)