Ryu Muraoka

Ryu Muraoka is an ex-boyfriend of Zario. He's first introduced in the second season of Pretty Dudes, where he's played by Kento Matsunami. The character's backstory was expanded upon in Pretty Dudes: The Novel.

The past
Ryu and Zario met in Paris.

The present
Ryu makes his first on-screen appearance in the season two episode, "Set Phasers to Ho," which was actually promo-released before the novel.