The Mystery of The Team Formed (チーム結成の謎, Chīmu kessei no nazo) is the fourth episode of the Inazuma Eleven GO Galaxy series.
- It was revealed by Nozaki Sakura and Matatagi Hayato that the players of the team didn't need to come at the trainings anymore.
- Sakura attempted to play as a goalkeeper during practice, because Ibuki was practicing his keeper skills at the basketball court.
- Gouenji and Shindou had a conversation and Shindou asked for a back-up team of 11 members.
- Five members of Shinsei Inazuma Japan didn't participate in the training. They were Manabe Jinichirou, Minaho Kazuto,Tetsukado Shin, Kusaka Ryuuji and Morimura Konoha.