the sakamaki brothers got a little brother name Hikari sakamaki, they adore their little brother and they won't let no one touch him. until one day a girl name yui komori came to the mansion and met the sakamaki's and Hikari. yui liked the sakamaki's but not Hikari, she hated how close they get to him and hug him, kiss him almost eveywhere(even on the lips) and bite him instead of her, so she try everything to get their attention but sadly she sometimes end up in reiji's dungeon and gets punish. then sometimes she takes it too far like slapping him or try to kill him. "w-what did i ever did to you yui-San?" -Hikari "this i what you get for trying to steal your brothers from me!!" -yui "But i-i wouldn't do that! -Hikari