Lion El'Johnson

The MC dies and gets his wish granted to be 'like' his favourite character, Lion El'Johnson. What he didn't specify, is where he wants to be born. Thankfully, the ROB who reincarnated him gave him something on the way in the form of a Meta Essence. This should allow him to become the strongest of all Primarchs, no question. In this story, the MC won't go back to Warhammer 40k. That will happen in another one after this one is finished.