Another world, Parallel world maybe time travel

Hey Guys,

I need the hive mind. The Doujinshi is about a guy (I think a fat one) who has time traveled maybe a parallel world something in the future where almost none male are existing. He gets tested and gets a license to breed. He walks around the city shouting something about impregnation service and fucks some girls outdoor.

I know a bit vague but hope you can help me. Thank you in advance