Help!

Does anyone know the (yaoi) manga where the protagonist is a Male who died young however, his life was extended by God (or entity resembling god). In order to extend his life though he must have sex. He first must do it in the bathroom where is friend and someone else are the seme's (later God joins in as the uke on top of him) and later on an angel appears and god clones the protagonist to screw the angel and god.

Any help is appreciated, thank you
(=・ω・=)