You tell him that your son is go take a nap, Ryua is yelled at you because you told him to take a nap "SHUT UP MOM!!"

hearing that his son yelled at you make Rin mad you told him that you're okay and he doesn't need to scold Ryua

"Do you think it's cool when you yell at my wife?" Rin said, Ryua look on the ground,trying not make eye contact

"Why're you just silent? Go yell at me just like what you did to my wife" Rin shouted, "Sorry papa..." Ryua said, "Say sorry to my wife, not me."