Yuu has married a high-earning husband and finally obtained her dream home, but everything changes with the sudden arrival of her father-in-law. Though he was supposed to be living in a care facility, he becomes obsessed with the couple's new residence and starts showing up every day. Each time, he manipulates Yuu with the promise, "I'll go home if you do that for me." At first, his requests are limited to bathing assistance and massage, but they gradually escalate into increasingly explicit demands, placing Yuu in an unbearable predicament. A story where family bonds and love are put to the test, intertwining sorrow and passion.