"My sister's husband was cheating, so I ran away from home saying I was going to get a divorce. I was thinking of letting you stay here until you calm down... is that okay?" "Of course. Your sister is in trouble, after all." "Seiichi, I'm sorry. Suzu-chan, it's been a long time. I'm really sorry, I'll be in your care." "Sister-in-law, no. ... Please don't worry about it." "I... I really regret marrying a man like that. I don't need men anymore. I decided to be honest with my feelings from now on." And so, Suzu started a cohabitation life with her sister-in-law, Riona...