Most of the story is about the older brother, but there are also other male protagonists.
The heroine's character is very cool, she is a slutty girl, and she has the feeling of controlling the whole scene with a cold face.
The heroine disguises herself as a man and has fake bones, master and apprentice, king and minister, master and servant. Service-oriented male protagonist.
All the men have sex, it's pseudo-coercive, and the heroine pretends to be a fool and plays with the male characters.
The ending is open, the heroine has money and leisure.
Men are all flawed, not good, competitive, and frame each other.
It's not marked in the book, but it should be everywhere. The female protagonist is weak, sickly, and naive, but not particularly excessive. If you like this mouthful, go for it.
One Piece spin-off literature, the heroine is a bit scornful, beautiful Celestial Dragon, and plays with various male characters.
Some of the male characters are virgins.
It is not specified in the book, but it should be a male protagonist, with three male protagonists, and the female protagonist's growth direction. The female protagonist has a feeling of being world-weary and cold.