The Story of Listening to a Mom at My Part-Time Job and Getting Into Big Trouble

University student Kouda offers to help shop auntie Haruka's hikikomori daughter Yuu. At Haruka's home Kouda gropes Haruka's breasts, undresses her, and has sex with her while Yuu watches from behind the door as intense penetration and oral sex continue. Later Yuu brings her escape plan to Kouda's house, exposes her breasts, kisses Kouda, and starts having sex as Haruka watches; Kouda then has intense sex with Haruka including deep penetration and ejaculation. Haruka wants the same experience as daughter Yuu, so mother and daughter share a threesome with Kouda, and days later the three continue sex until all condoms are used. Yuu wants to go with her mother and Kouda; Kouda's phone is confiscated so he ignores work and university calls, ending trapped with the mother and daughter.