Found it...

Boku Unmei no Hito 1-2! jdrama. is about a young man, Kame, who has bad luck with women. God, Yamapi, shows up and tells him who his destined other half is. Their future child will save the earth, so God tries to help him out. It's a romcom, not a scifi show. Unfortunately, this is entirely too slow and the comedy is nonexistent. Yamapi is cute, but isn't there enough to keep the show interesting. Kame and the main female character are entirely too bland. Dropped. BUT if you can find the theme song performed by Kame to YamaP, it's adorably bad jpop in the best way.