"You're far too serious... You should try wearing sexy lingerie to seduce your husband. You need to be more aware of your femininity." Mika (Yuka Oshima) couldn't hide her agitation at the casual remark from the housewife next door. One afternoon, after finishing her chores, Mika picked up some lewd underwear she would normally never wear and secretly tried it on in front of the mirror, remembering for the first time in a long while that she was a woman, not just a wife. However, she was accidentally spotted in that state by her husband's friend...