Koi Hanabi

 is the debut single by Yanchan Gakuen Ongakubu.

Type-A & B CD

 * 1) Koi Hanabi (コイハナビ)
 * 2) Wanchan Kokuhaku (ワンチャン告白)
 * 3) Koi Hanabi (コイハナビ) (inst)
 * 4) Wanchan Kokuhaku (ワンチャン告白) (inst)

Type-C & D CD

 * 1) Koi Hanabi (コイハナビ)
 * 2) SUMMER Reason
 * 3) Koi Hanabi (コイハナビ) (inst)
 * 4) SUMMER Reason (inst)