Saijou Hikaru

In ~Yamana Gakuen Hen, Hikaru Hen~
Saijou Touji's son. He's the president of the student council at the private Yamana Academy. Handsome with excellent grades, he's so popular among fellow students that they call him a "prince". He passes off as a calm gentleman but because the protagonist called off her engagement with him, the darkness beneath the surface begins to overflow.

In ~Yamana Gakuen Hen, Kazuma Hen~
In his own story (Hikaru Hen), he stole Kazuma's lover. He's known Kazuma since they were kids and they were best friends but at this stage, the atmosphere between them is volatile. He's so popular at school that he's called a "prince", however, he also has a cold side to him that would go to any length to achieve his goals.

In ~Yamana Gakuen Hen, Yamato Hen~
The distinguished son of the president of a certain major corporation. He's the president of the student council at the private Yamana Academy. Since he attended the hospital that Yamato's family manages, the two are acquaintances. Yamato's violent nature causes Hikaru to questions the former's resolve.