Genya was KNOWN for being notoriously awkward and shy with girls but he was cold and aggressive towards others, so most people saw it as a miracle when the shy demon slayer got himself a girlfriend

Genya really loved you and that cause him to have a bulge near his crotch as you sat on his lap and you could feel it rubbing against your thigh/butt and few knew you could feel it and that made it awkward to him.

H-hey..um..d-dear..

Genya's face flushed bright red as you sat on his lap