Touken Ranbu Online is a popular Japanese online browser game developed by DMM Games and Nitroplus. Players assume the role of a sage who brings legendary swords to life as handsome young men, called 'Touken Danshi.' The game has inspired multiple anime adaptations, stage plays, and a vast fan following, sparking a cultural phenomenon in Japan. Its blend of history, fantasy, and character-driven storytelling has made it a standout in the online gaming world.