I started to want a (fanfic/Self Insert/novel/anything really) of someone that knows the story and everything from Warhammer 40k and suddenly he is (reincarnated/summoned/a hole/whatever) into the universe of Warhammer 40k and the almost first thing that he makes is to heal the Emperor and then hell broke loose and a massive war, all of the Warp against the Empire and everything... So if anyone knows about a (fanfic/Self Insert/novel/anything really) with a setting like this please post the name (or if you can the Link) of the (fanfic/Self Insert/novel/anything really) please.
...why 40K? That place so shitstick, you sure your MC not getting spliced for the shit he pulled??? It is the grimdark future where fun isn't allowed, peace is non-existence, hope is lost and there is only war.
MC probably won't be able to get close to the emperor in 40k before inquisition burn him first lol. The custodian probably execute mc on the spot.