While his wife was pregnant and visiting her parents' home, Yuta diligently took care of household chores. Having lived alone for a long time, he didn't find cooking and cleaning burdensome, but he still felt lonely. At that time, when he was longing for companionship, his sister-in-law Rin came to check on him. Yuta welcomed her with open arms, happy to have the house lively again after a long time... However, Rin's true purpose was to alleviate her dissatisfaction with Yuta...
