This is a world of hierarchy, and everyone is born with a hierarchy. The higher the abcdf level, the better. In addition to these five common levels, there is also a special level S. The number of people is very small, and it is indeed the top of the top. A family whose direct line has been A for generations has a B, and a girl who was assigned an F at birth has an S.
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.
