Ichika has a good marriage despite her workaholic husband’s low sex drive and their infrequent intimacy. She married him for his kindness and dedication, and she is a modest, hardworking wife—but she also adores sex. Without her husband knowing, she casually changes lovers day after day, as routinely as changing into her favorite jeans. She understands that every affair betrays him, yet her compulsive need to cheat keeps driving her into one secret encounter after another.