Yukina Minato gathers members intertwined with different thoughts to form a band and participate at the Future World Fes. This is the story of their "promise" from their formation to the challenge of the music festival.

• Bushiroad
• Sanzigen
• Aina Aiba
• Haruka Kudou
• Yuki Nakashima
• Megu Sakuragawa
• Kanon Shizaki
• Aimi
• Sae Otsuka
• Rimi Nishimoto