[Shiromitsu Daiya] Dokidoki Costume Play 2 (Koushoku Shounen Vol. 13)

Confronted by Saitou-senpai over a leaked video of crossdressing brothers, Numakunai answers the dare with a magical girl costume of his own — twintails, long gloves, and the same slippery lubricant from the infamous stream. What starts as a bid to prove innocence melts into slick fingering, eager rimming, and the once-smug senpai riding his crossdressed kouhai through deep kisses and shuddering, cum-soaked climaxes. The punchline arrives by phone afterward, as a photo of the catboy senpai texted from Nii-chan lands in exactly the wrong hands.