After the Blood Moon Curse, the Vampire Sister Will No Longer Act

[Maximum favorability at the beginning] [Monster Girl] [Sister Control] [Be stubborn first and then become strong] [Multiple female protagonists] —————— A hundred years ago, an extraterrestrial meteorite fell to Area 13 and formed the "World Tree". The MH virus it brought spread to all mankind. This virus is invisible and has no effect at all in its normal state. When a human's MH coefficient exceeds the critical value of 100, it will turn into a violent monster that has completely lost its mind. But human society did not collapse because of this. It wasn't until the blood moon curse ten years ago that the real conspiracy emerged... It turns out that the real monster was not transformed by someone, but came from the utopian world under the crater... ——————— Quick news: Haha, I have just passed the public examination and landed. Are you telling me that the blood moon curse is coming again? The end of the world? Good news: I sat up in shock while dying of illness, my sister turned out to be a real monster. ... Vampire sister: "Brother, although there is reproductive isolation between monsters and humans, you can't..."