SeicheAway's manga / #Death(1)

Hebi no Seikatsu

Complete | Katashina | 2015 released

Oof t/w: major character death A set of twins where one is born as an omega and the other is an alpha. The manga starts off with the death of the omega twin, leaving his husband and daughter and twin. A great read or you can finish reading if you're up for angst.