Ryouta is Kousei and Tsubaki's childhood friend who is also the captain of the school's soccer team. He is extremely popular with girls, often adopting a frivolous attitude. However, he does once in a while come up with good insight.
Ryota is a bit of a play-boy. He seems to prefer girls who are "cute" seen as he comments in episode 1 that when he sees Kaori for the first time he stated that Tsubaki did a good job on finding a cute looking girl.