666 Satan / 666〜サタン〜 / O-Parts Hunter / 666 사탄 / 666撒旦 / Six Six Six Satan / O-Parts Tactician / O-Part Hunter

If you are looking for an explosive shonen experience that perfectly blends high-octane combat with a deep, dark mystery, then look no further. In a future where the dust of ancient civilizations hides weapons of unimaginable power, humanity has found its new obsession: O-Parts. These relics are more than just junk; in the hands of an O-Parts Tactician, or O.P.T., they become tools of legend capable of altering the fabric of reality.

Jio is a kid who has been burned by everyone he ever trusted. He is cynical, money-hungry, and incredibly dangerous. But he carries a secret that even he does not fully understand—a literal demon of unimaginable ferocity living within his soul. When he meets the idealistic Ruby, a girl searching for her father’s legacy and dreaming of becoming a world-famous treasure hunter, the two strike up an unlikely partnership. It is a classic tale of a treasure hunt gone wild, but with a high-stakes twist: while Ruby wants to uncover history, Jio is aiming for nothing less than world domination.

This series delivers everything a fan of the genre could want. From the intricate designs of the O-Parts to the heavy emotional weight of Jio's tragic past, every chapter keeps you on the edge of your seat. The world-building is vast, spanning across dangerous ruins and vibrant cities, all while building toward a confrontation with the literal devil himself. This collection also includes the bonus one-shot Trigger and an extra chapter to round out the experience. Strap in for a journey through a world of magic and machinery where the line between a savior and a monster is razor-thin.

Shonen, Action, Adventure, Fantasy, Supernatural, Comedy, Demon, Ancient Civilization, Martial Arts, Relic Hunter