Yu Shao got a strange system that allowed him to earn scum points based on his daily scum level, which he could then redeem for magical skills and items. This piqued Yu Shao's interest, as being a scum was a high-risk profession. To avoid being scum, he had to humiliate them.
A full-family work.
Yanagi Nagao traveled to the world of sozoku (mainly the otherworld), obtained the blessing of the loan system, and became the head of the Takayanagi family.
Akizuki Airi: Why is it that the one who paid off the debt of Xier is not me, but my mother? I can do it too!
Takayanagi Kaoru: Should I call you big brother or dad?
Adachi Rika: Uncle, I also belong to you as an idol.
Oki Rinka: If you kill her, I can offer my mother
Katsura Kotonoha, Saionji Sekai, Amemiya Misako, etc. to conquer by myself!