Vol 3 Chapter 6
Ramudan took the place of Lala, his twin sister, during marriage with Uruji. Uruji loves Lamudan so much but Lamudan is still figuring out his feelings. Their married life has its twist and turn but in the current. Since they can't have children, Uruji's father ask Lamudan to let Uruji have a 2nd wife.
Lala no Kekkon