While her wife was pregnant and went back to her hometown, Yuta was busy doing housework. Because I lived alone for a long time, cooking housework is not a pain, but it's still lonely for one person. Just as I was thinking I miss such a person, my wife's sister, Rin, came to check on her. When the house became lively for the first time in a while, Yuta welcomed Rin as a welcome welcome...but Rin's true purpose was to relieve his frustration with Yuta...