Paradise Kingdom
パラダイスキングダム
A warrior who had a long connection with a legendary weapon and a demon lord named Seijo is reborn as "Kamishiro Hybrid" and finds peace as a father. His son, Ushiwakamaru, struggles with loneliness until his half-brother arrives and threatens to take his place. This causes Ushiwakamaru to feel a deep, unshared emotion, leading him to abandon his morals. He vows to establish a kingdom of his own, calling it "Paradise Kingdom."