This is a new Rosario+Vampire series I'm going to be doing from time to time. Here's essentially the main situation.

Tsukune is becoming the new headmaster of the academy, but as a new Shinso vampire, he's discovered a new set of abilities unique to the species. By drinking another monster's blood, Tsukune can become a vampiric version of that yokai, but still maintain his full vampire form. So the opposite of Alucard, though the blood made it possible. Through this, Tsukune decides to form a harem and make sure the group he knows and loves doesn't break up like he feared.

There will be different lewd scenarios, so read at your own risk.

Members:

All four Shuzen sisters (Kokoa, Moka, Kahlua and Akua)

Kurumu Kurono

Mizore Shirayuki

Ruby Tojo (Yukari and Fang-Fang are perfect for each other)

Shizuka Nekonome

Ririko Kagome

Tamao Ichinose