
I completely forgot that they were cousins after a few pages at the first chapter. Hahaha.
It was never a plot drama so you can just throw any random relation label to them and it won't change anything. Seriously they need to move to new place, poor Saki gonna get traumatized hearing them having loud sex every now and then. (づ ̄ ³ ̄)づ

Basically cute little were-beast have to mate with his pair before his thirtieth birthday in order to stay alive but the bead that signifies his partner got swollen by a guy so now he had to mate with the guy instead. I bet that guy is secretly a psycho schemer. Muahaha.
And don't forget to research anal sex for beginners. You're going to need that.
Grandma, mother, your son brought in your future son in law.
(=・ω・=)