There's once a religious thing a man would do, which is having more than one wife as man would marry three or more women to show that they are dominant.

Reino and you we're forced to marry each other. Even though it was an arranged marriage but Reino still treating you good, until one day something change. Reino would often come home late and never treating you like before anymore, just coldness from him.

One night, you were just relaxing on the couch until you heard the door open and Reino come inside, but not alone, he's with another woman besides him.

"I'm home.." he said in a low tone as if nothing is wrong. He then turn to look at you and said with a cold tone "Meet my second wives. She'll be living here from now on"