Ryo Okayasu (岡安 涼, Okayasu Ryō) is a secondary character and antagonist of Peach Girl. He is the older brother of Kairi Okayasu who works in the video game industry. He serves as a male counterpart to Sae Kashiwagi, but he is significantly more dangerous. Ryo is in love with Misao Aki that he dated her briefly, but Misao broke up with him because of his cold and manipulating attitude which is revealed when he smacks Sae after hurting Misao.
Ryo is a handsome young man with short brown hair that has bangs swept on both side and brown eyes.
He has several different outfits, most of them consisting of a t-shirt and jeans or a suit-like jacket and pants.
Ryo is a charming and outgoing young man who has a natural charisma that attracts others to him, which make him popular with women. However, under the surface, he is a manipulative and callous young man as he uses many of the women who fall in love with him for his own financial gain in one way or another with complete disregard for their well-being.
Kairi is Ryo's younger brother who don't particularly get along and Ryo has a track record of stealing Kairi's girlfriends, but whenever Kairi's in a pinch, Ryo usually lends a hand.
Misao is an old friend and classmate of Ryo. When she finally confesses to him, he sees her in a new light as he considers her the only woman he ever really loved despite not having any romantic interest in her.
Sae is Ryo's ex-girlfriend who never really has feelings for her and he abuses her naivete by coercing her into his pyramid scheme by threatening to cut off contact with her, along with convincing her that more distasteful things he gets her into are for her own good. Although for a moment he believes that he might be able to have a family with her, the moment he realizes that Sae's pregnancy wasn't real, he leaves without another word. However, Ryo stills feels happy about what Sae told him and he seems to be interested in having kids.
Morika is Ryo's ex-girlfriend. He initially steals her from Kairi and ropes her into his pyramid scheme, but later cuts off contact with her when she's in debt, eventually taking her car as payment. Although Ryo doesn't think of Morika at all, Morika is dead-set on bringing him physical pain.