As Ryuunosuke and the others are ambushed by Mobile Citizen enemies, Ryuunosuke remembers the times he has shared with his best friend which triggers something in Kokuryu and he transforms into a new form.
As Ryuunosuke and the others are ambushed by Mobile Citizen enemies, Ryuunosuke remembers the first time Kokuryu transformed to fight back against a similar assault. This triggers something in Kokuryu and he transforms into a new form.