The Story of Making Even My Girlfriend's Mom a Sex Friend

A 38-year-old mother of two posts her worries on an advice board after her eldest daughter's boyfriend Nao, with the eldest's permission, becomes sex friends with the younger daughter Mei and has penetrative sex with her even in the hallway; when the mother forbids it, Mei tearfully ends that arrangement while the eldest continues intense multi-round sex with Nao. Sexless for five years, the mother tries to seduce her husband in lingerie and fails; Nao peeks at her undressing and showering and sniffs her panties, then massages her shoulders and gropes her breasts, and conflicted but pleased to be desired as a woman she dresses more revealingly and masturbates with a vibrator. Mei seduces Nao again and mounts him while the mother is aroused nearby; after five years of sexlessness Mama has intense sex with Nao, overwhelmed by pleasure despite verbal refusal and losing her maternal composure through kitchen kissing and all-day acts, while Mei also has sex with Nao under blankets until the eldest daughter and Mei catch Mama and Nao mid-sex at the entrance. After a heated fight the eldest permits Mei and Mama to have sex with Nao and Mama accepts becoming a sex friend; next morning she joins a threesome with the eldest and Nao, then during a meal nurses Nao at her breast, and in the bath Nao, Mei, and Mama wash together and soap each other as Mei gives oral sex while Mama and the eldest daughter stimulate Nao anally and by hand until climax. After Mei takes a facial and Nao stays erect the daughters compete with Mama, who puts on a full fishnet bodystocking; Nao chooses her, has intense sex, and ejaculates, then the eldest daughter rides him next, Mei claims the following turn, and all four have group sex with Nao holding Mei while penetrating her, the eldest clinging from behind, and Mama kneeling for oral until he finally creampies Mama. Mama asks if she is first place and the daughters demand overtime as the story ends.