Maximum Edging and Teasing Sex with My Senior

A story about having teasing sex with a girlfriend who's a senior at work.

It all started with a trivial thing, that the protagonist got the idea to have the kind of mean teasing sex with his girlfriend that would "make her want to cry out for release."

After repeatedly edging his girlfriend who wants to cum badly, he gets to see an indecent side of her that he's never seen before.

(Source: Melonbooks, translated)

Note: Released at Comiket 99.