Responses
The twin is a hermaphrodite.
It is yaoi, this is a specific genre of it called omegaverse. Because male omegas can get pregnant in this universe, I'm assuming that the twin has large breasts so that when he has a child, he can breastfeed him?
No. The twin is a hermaphrodite, look it up.
is it yaoi?
If it is yaoi why does the twin have huge breasts?