The half-sister's r@pe was not well-handled, imho. It IS an ******uous r@pe, which will put some readers off, so having decided to do that, you should have gotten your money's worth. Instead, it was pointlessly easy and over much too quickly.
I don't recall. is MC not using former second queen and all that clan's females? first queen is his mother I think, so other queen should be thoroughly used for his cultivation.