[Umai] Immoral Exposure (COMIC Megastore Vol. 6) {Mistvern}

A mischievous young girl in an oversized coat slips off to a secluded park restroom where a bald, heavyset older man awaits, the pair trading slow, sloppy oral and slick outdoor pounding in the brush just out of sight of passing pedestrians. Their hidden tryst nearly unravels when a young boy stumbles onto the scene mid-act, getting sworn to secrecy before wandering back to his ball game. By the final page she has him cornered at the stall, coaxing the blushing newcomer with heart-shaped pupils to stop stalling and join the party already.