A soldier passes on, dwelling on how for all the good he did, so much was not done.  He awakens in an alley covered in filth but young once again.  Sees evil happen and reacts.... I put the content warnings on just in case, the MC I plan will not be overly dark but the world will not be pleasant.  Gamelit tag is a maybe I like skills and all associated but formatting boxes sounds like a horror show.  Anyway give a read if you want.