Also Ryoutaro Imai already auditioned for Gavv once for Shouma's role and have a close relationship with Valen's actor.

>I also auditioned for "Kamen Rider Gavv"
>I worked with Hino Yusuke (who played Hanto Karakida) as a buddy.
>I auditioned for the role of Shouma
>I'm doing a performance with Hino-kun.
>We even went out to eat together during the audition.
>We have a very good relationship