夜空に華咲くお願いサマー！ (Yozora ni Hana Saku Onegai Summer!)

Flowers Bloom In The Night Sky, Please, Summer! is a song sung by Kaito Fuga, Len Kagamine, Kiyoteru Hiyama, and Gackpo Camui. It is the two-hundred-and-eighth track in Other Vocaloid Songs 7: Mostly Kaito and the sixty-first track in Other Vocaloid Songs 26: Mostly Len Volume 2.