DSOD-007 A beautiful, mature mother and her friend, whose true identities they both knew, meet at a brothel and have an affair behind the scenes. - Reika Natsume - Natsume Reika

Masashi, a salaryman stressed by a sexless marriage and arguments over household finances, visits a sex establishment to relieve his frustration. There, he coincidentally encounters Reika, a fellow mother he admires, who works there under the pseudonym "Fuuka." The two agree to keep their true identities secret, and as their circumstances align—Reika is troubled by her husband's infidelity—they begin meeting at the establishment and become deeply involved with each other.