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!