( 666〜サタン〜 / 666 Satan / O-Parts Hunter / 666撒旦 / 666 사탄 / 666 ซาตาน / 666 Сатана / 666 Satán / Satan 666 / 666 Satã / 666 Satanas )

Step into a gritty future where the relics of a fallen civilization hold the key to absolute power. Humanity is locked in a desperate struggle over O-Parts—mysterious artifacts from an ancient age that can only be awakened by a rare breed of warriors known as O-Parts Tacticians. In this world of high-stakes treasure hunting and supernatural warfare, a young boy named Jio survives by trusting in one thing and one thing only: cold, hard cash.

Jio is far more than he seems, however. Beneath his money-obsessed exterior sleeps a demon of terrifying ferocity, making him a walking powder keg in a world already on the brink. When he crosses paths with Ruby, a spirited girl determined to become the world's greatest treasure hunter, an unlikely partnership is forged. Ruby is chasing her father's legacy, but Jio has a slightly more ambitious goal—total world domination. Together, they embark on a dangerous quest across the globe, navigating treacherous ruins and facing off against formidable O.P.T.s who would use the ancient relics for evil.

From the creative mind of Seishi Kishimoto, 666 Satan is a masterclass in classic shonen storytelling, blending explosive action and high-fantasy world-building with a touching story of friendship and redemption. This complete edition also includes an extra chapter and the original one-shot Trigger, giving fans the full experience of this legendary series. Whether you are here for the intense combat or the mystery of the beast within, Jio and Ruby's journey is a wild ride you won't want to miss.

shonen, action, adventure, fantasy, comedy, drama, supernatural, demons, treasure hunting, seishi kishimoto