[Makin] Futanari Childhood Friend [Ongoing]

A young boy finds himself tangled in a charged game of growing up when his seemingly ordinary childhood friend invites him over to wash off the sweat of summer practice, leaving him flustered by her casual invitation. Things escalate quickly in the bathroom as he discovers a secret he can't quite process — her cock is massive, even bigger than his — leaving both of them flushed and breathless as they drunkenly compare themselves and whisper about watching each other's "naughty videos" together.