Horus Traveling Through the Heavens, Starting from Naruto

My name is Horus Luperkar. I may be the traitor you call me, the sinner who burned half of the galaxy, and the return son who was killed by his father himself. But I am more accustomed to another title: Warmaster. When I died aboard the Vengeful Spirit, I was given a second chance by a higher-dimensional being called Paradise. The price is that I have to fight my way through this multiverse. Looking at these ninjas in front of me who are forming seals and breathing fire, shouting about bonds and dreams, I just feel funny. No tactics, no discipline, just ridiculous individual heroism. You call this a war? No, this is just playing house. Although I now have no power armor, no Legion of Astartes, only a mortal body and a rusty steel pipe. But I will teach you. I will train the refugees in the ruins into war machines that will make the world tremble. I will use the coldest tactics and iron blood to crush your ridiculous ninja. I wouldn't mind burning down another universe to resurrect Sanguinius.