Dont judge the book by it's cover
It is not about omega happy go lucky life
The story is sad
There is a twin. One is an omega and one isnt.
The non omega one has a reciprocated love with his alpha childhood friend
They made a plan together
Everything seems good until the other twins had heat and the seme rape him
The seme took responsibility and marry the twin.
The MC feeling so sad that he doesnt return to his hometown for a long period
Until....
Hebi no Seikatsu