Looking around at various manga's on mangafox and found this

ORETAMA

The fate of the world rests on one man's shoulders. Or, to put it more exactly, it rests on his balls.

In a freak sealing accident the Queen of Terror is sealed into Satou Kohta's balls, thus preventing her from reigning destruction on the world. However, a lesser devil, Elyse, has been sent up to Earth to release the Queen at all costs. The only way to do so is to make Kohta ejaculate, and Elyse only has 30 days to do it.

The battle for mankind has begun, in Kohta's pants.

now i have to read it.

Only has 30 days to ejaculate? Must have some damn good stamina.

I remember this

My balls

i rmbr this, was kk not that great nor bad