Series by 高橋和希

Yugi Mutou is a shy, puzzle-loving high school student who spends his days solving the ancient Millennium Puzzle, a mysterious artifact passed down by his grandfather. When he finally completes it, Yugi unknowingly unlocks an extraordinary power and a confident, enigmatic alter ego who emerges during moments of danger. Drawn into a world of high-stakes games and shadowy challenges, Yugi and his friends must face off against cunning opponents in battles that test their wits, courage, and bonds.