Sion Saiguuji

An upperclassman at Seitokoh Academy who appears in the di[e]ce game as the bishop piece, acting as Kazuki's guide. He is very quiet and very obedient, though he actually doesn't like being ordered by Kazuki. He might be the "King" since in the previous game with Gara, as they share the same info with Naruse & Haruki. They two have the same face and Sion is much calmer which is similar to Haruki. Gara takes the place of Naruse. (Source: Wikipedia)