[GRINP] Oniicyan ha Oshimai! EX Mihari's Laboratory

(同人誌) [GRINP] お兄ちゃんはおしまい! 副読本みはりの研究室

Parodies: Onii chan wa oshimai (257)

Languages: Japanese (322667)

Artist: Neko toufu (11)

Groups: Grinp (11)

Categories: Doujinshi

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Oniicyan ha Oshimai! EX: Mihari's Lewd Laboratory - Onii Chan Wa Oshimai Parody Doujinshi

Dive into the depraved world of Oniicyan ha Oshimai! EX Mihari's Laboratory (お兄ちゃんはおしまい! 副読本みはりの研究室), a 24-page Japanese doujinshi by Grinp that pushes sibling love to obscene heights. Artist Neko Toufu crafts Mihari’s twisted experiments as she explores her brother’s body with scientific lust—measuring his throbbing cock, testing cum production, and documenting every moan. This parody of Onii Chan Wa Oshimai drips with sweat-slicked tits, spread pussy close-ups, and anal probing that’ll make you climax uncontrollably. Crave more taboo play? explore more forbidden sibling play or check this story where big brothers become fucktoys.

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Mihari's Forbidden Experiments: Oniicyan ha Oshimai! EX 18+ Hentai Doujin by Grinp

Grinp’s doujin unleashes Mihari’s insatiable curiosity in graphic detail—watch her lubed fingers plunge into her brother’s ass while her own dripping cunt grinds against his thigh. Each page escalates the debauchery: titfucks that smear precum across her nipples, doggy-style pounding that slaps her jiggling cheeks raw, and creampie ‘research’ that floods her womb. The 24-page frenzy celebrates every lewd inch, from cock-sucking close-ups to gaping after-sex holes glistening with cum. Artist Neko Toufu’s detailed anatomy makes you feel every thrust, every choked-back scream as Mihari’s ‘lab work’ dissolves into mindless fucking. Fans of Onii Chan Wa Oshimai will adore how this doujin twists wholesome sibling bonds into XXX fuel—especially when Mihari’s experiments lead to double-penetration ‘stress tests.’ Need more family-friendly filth? this camping trip escapade turns tents into sin dens. Don’t miss Mihari’s climax—a screaming orgasm that soaks the lab equipment as her brother’s cum erupts inside her convulsing pussy.