Ryûya Wakaba: Ryûya Wakaba. Actor: Gantz: Perfect Answer. Ryûya Wakaba was born on 10 June 1989 in Tokyo, Japan. He is an actor, known for Gantz: Perfect Answer (2011), Gantz (2010) and On the Street (2019).
Known For: Gantz: Perfect Answer (Koki Takahashi), Gantz (Koki Takahashi), On the Street (Aoi Arakawa), The Voice of Sin (Actor)