Bestial

Three guys and one girl...
1. Yukino- Whose family was 'supposedly dead' eight years ago? Just who caused the fire of the house and why are they after her? She is your typical heroine with supernatural attributes.
2.Shion- You're quiet and observant hero. He has the ability to sense 'presences' and deduce everything from their aura. He is only strong during the night. He is one of the 'guards'.
3. Kin- You're cheerful and gullible hero. He also has the ability to sense 'presences' and analyze fighting styles. He is only strong during the day. He is also one of the 'guards'.
4. Ren- The mysterious 'male lead protagonist' of the story. Son of a Yakuza leader who loves Kendo and always wants to please his parents but to what cost? He seems to have a rough past but also have a split personality that confuses Yukino.