Kouichi Nanase

Оригінальне ім’я: ナナセ・コウイチ

Nanami's big brother. Though he was once a Gunpla builder good enough to appear in the World Tournament, a certain incident led to his retirement from Gunpla Battle. The efforts of Riku and his friends touch Koichi's heart, and he decides to make his comeback as a member of their force.