Yui, who has an irresponsible personality but a beautiful appearance, has lost her nighttime activities with her husband. She was going to welcome her husband home in sexy underwear, but the chime sounded the old man who moved next to her. She came with the intention of sharing fresh ingredients with her moving greetings, but she witnessed Yui's see-through underwear. The two, who were never supposed to meet, will have an affair that will make them sweaty after witnessing this underwear.
