Comprehensive Manga: the Road to the Strongest Demon King Starting from the Underworld

Walking across the heavens, he is in charge of infinitely mutated demon chess pieces. One chess piece can break through the limits of race; twelve chess pieces can create the strongest family legion. From Demon High School to Naruto, from One Piece to Death, from Genshin Impact to Honkai Impact III - Lin Yuan, in the name of the descendant of Lucifer, contracted Gurefia as the queen's pawn, conquered Busujima Saeko in Academy Apocalypse, conquered Esdeath in Red Eyes, killed Muzan in Demon Slayer: Kimetsu no Yaiba, and defeated Herrscher of the End in Honkai Impact III. He endured for sixteen years in the underworld and practiced hard at the waterfall without anyone noticing. In a shocking showdown, RatingGame crushed Phoenix and was crowned the Fifth Demon King of the Underworld. His legion of dependents spans the heavens, and his chess piece system covers queens, chariots, bishops, knights, and soldiers. His harem ranges from the head maid to the sword master, from the school doctor to the military counselor, from the elves to the dragon gods, from the ship girls to the tactical dolls, and no one is left out. "A strong person should have everything." This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.