Variety Manga: Kotori-Sama, I'll Leave the Harem to You.

Xiao Yu traveled through the private Saihai Academy and stopped Ji Hiiragi Xuena's sneak attack for the 38th time in the beginning. "You are obviously a welfare girl, but you still want to say that I am a pervert!" "White is so fierce and ugly. I like black." Kotori Itsuka has full experience as the system's harem, and has gained the power of the True Ancestor. In addition, he has the aura of a famous family and is a handsome vampire... Great, you just need to make the right choices and you can easily save the day! Seeing Zui Dun, it seems a bit powerful to be able to avoid being hacked to death by Xuecai? However, Kotori claimed that if Xiao Yu makes good use of the system, he can have a harem group of beasts that is not inferior to Shidou Wuhe? Whether it's reliable or not, let's try it. So... Miss Tohsaka, who was pulled in by the space shock, wait for me to take advantage of her! The greedy Yatogami Tohka cheated her away with food! The confused Nagato Yuki, let's wait and see! Seto-chan who was thrown cold water on me, I know you will have no choice but to marry if your identity as a mermaid is discovered... In addition, space shock allows Xiao Yu to wander around in all walks of life. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.