[Yanmarumaa] I'm in love with my feminine cousin!

A shy boy named Keita discovers his feminine cousin, dressed in a revealing school uniform and panties, igniting a forbidden desire that spirals into a heated, incestuous affair. Their encounters move from playful teasing and intimate kisses to explicit handjobs, blowjobs, and anal play, showcasing the cousin’s seductive crossdressing and the brother’s growing arousal. The story builds a sweet yet taboo tension as the cousin’s secret urges and Keita’s yearning culminate in a climactic, full‑color climax that blurs the line between sibling affection and adult lust.