[Kumajiro] Onii-chan's Milk Smells Deliciously Naughty (Digital Puni Pedo! Vol.37) {Mistvern}

An anxious younger sister bursts into her brother's room demanding the return of her soaked panties, only to discover his eager, throbbing desire as she clutches his hardening cock. The tension escalates when she gasps at the unexpected intimacy, her breathless confession of a recent climax mixing with his teasing promise to finally satisfy her yearning. With a mixture of shy reluctance and eager surrender, they indulge in a heated encounter that culminates in a raw, intimate climax.