All Hayami knew was how to fight to survive.

It's now time for STARISH to take on the roll of being the senior with the help of Quartet Night. Meet RESONANCE! a girl idol group that are the new underlings! They are prodigies of music, unique and talented! But if they are that great, why are they underlings? What sad pasts loom over their shoulders?

Ren Murasakibara, the twin sister of Yosen's center, Atsushi Murasakibara. But as this may sound, she's not like her brother; Although she has Atsushi's hair and eyes and sweet obsession, she is a 16 year old beautiful/cute girl that is shy, sweet, timid and clingy. These two aren't 'normal' siblings, they have a deep (sibling only!) bond that no one could understand but eachother.

Raised by Karl Heinz, six vampire sisters are to join the Sakamaki and Mukami brothers to live with them and become their brides. These sisters have different personalities and some may seem sweet, shy, hot-headed and flirty. But be warned, they are cruel and dangerous. And have the same past... That has scarred them forever.