A personal gym trainer becomes fascinated by his new muscular, tomboy client, Rinka Koyama, voiced by Ren Itsuki. When he suggests that her highly fit body doesn't mean she has a tight vagina, an offended Rinka challenges him to a sex session to prove him wrong. During the act, she experiences multiple intense orgasms while he remains completely unable to climax because she is too loose inside. Frustrated by his honest feedback, she cuts the encounter short but secretly starts rigorous pelvic floor training. Eventually, her vagina transforms into the ultimate tight grip weapon capable of completely dominating his cock. This explicit story features muscle girl hentai, uncensored sex, tomboy porn, extreme vaginal tightness, and gym trainer hentai. To watch this animated release online, fans use popular search queries like rule34 gym, rinka koyama porn, muscle girl rule34, uncensored hentai, and tight pussy hentai.

Year: 2026 Year.
Release date: 2026
Source: Original
Genre: 3DCG, Big tits
Quality: WEB-720PX
language: RAW
English name: Mezon de Paavu 102 Koyama Rinka vol.1 [Dansou ga shumi no kinniku joshi ga yuruman o shitekisare muki ni natte kitaeta kekka chitsuatsu ga genkai toppa shita. To iu ohanashi...]
Original name: Maison de Pave 102: Rinka Koyama, Vol. 1 [The story of a muscular girl who enjoys cross-dressing—after being told her vagina was too loose, she got so determined to work out that her vaginal pressure broke through its limits…]

Director: MAD VERMILLION
Studio: MAD VERMILLION