The Mute Swordsman

After committing mass genocide against multiple daemon that attacked and destroyed his town, Nocturnal "Solstice" Shadow, aka Noctis, spirals into a deep depression filled with guilt and resentment for his own actions. Tormented by nightmares and plagued with random flashes of his brutal slaughter of the daemons, he takes his own life to repent for his unjust killing. Already given a second chance by Faust, a god of a world, he is given another chance to help relieve the guilt on his soul. He is still plagued by the nightmares in an orphanage on the other world he was given a third chance after de-aging once again and being reassured that his previous world was frozen until he returned. This reassurance was given to him by another god, but this one being the creator of that universe, Harmonia. He can't help but feel grateful before the nightmares began once again a few days after being adopted by the Kurosaki's and it didn't help when his adopted mother died saving him.