Back In Black by sakurademonalchemist
https://www.fanfiction.net/s/10631516/44/
Slash
Dean/Castiel, Sam/Gabriel

Excellent story with a neat twist on the reincarnation trope. Harry is fed up and asks death if he can be reincarnated. Death agrees but tells him that the life will be hard and dark in alot of places but he will have a family and love in addition to keeping his magic. Harry agrees and death decided to end the spat between two idiots that would plunge heaven and hell into war on Earth. He is reincarnated as Dean Winchester and the Supernatural world will never be the same.  While the story is slash it's no more then hints and innuendo. The scenes are hilarious and I love Dean's creature form because that is awesome. I love the bear bombs and know some people I would love to use it against. While the story is incomplete the main arc is done and they have traveled to an alternate dimension to prevent at least one Harry Potter from marrying Ginny Weasley. I love this author I just have a pet peeves against people that write so many stories but only complete a few. But this story is fairly long and ends in a good place.