Enkou Bakunyuu JK to Shasei Gaman Game - Gaman Dekitara Nama Ecchi, Dekinakattara Genkai Sakusei!!

You, a virgin, are a company drone on his way back home after work.
A couple of JK hotties call out to you!! Like the schmuck you are,
you follow their every word and find yourself in bed with them at a love hotel.

That's when they bring up mention of their Ejaculation Endurance Game.
If you have resist ejaculating for a certain period of time...
they will let you have creampie sex with them!?

But wait, there's a catch... if you fail miserably... t
hen they will squeeze you dry of every last drop in your ballsacks. No sex.

Hmmmm... not a bad deal actually! You step up to the challenge and~...

[From DLsite English]