Riona Matsumoto

Riona Matsumoto is a supporting character of Ousama Game. She was the final survivor of the King's Game in Class 2-1 of Kure Academy. Though she drowns herself shortly after winning in hopes of stopping the Game permanently. Sadly it does not work. She initially acts tough and makes Nobuaki use the honorific -san suffix when addressing her, but gradually falls in love with him.