Dark Possession is a western mafia BL drama full of twisted dual yandere romance. Powerful underworld boss Kaelen spends a decade searching for Riley, the boy who saved him in an orphanage fire. He abducts and confines Riley out of obsessive guilt and extreme possessiveness, setting harsh rules to lock the youth by his side. Seemingly timid and fragile, Riley is actually a scheming black-hearted hunter who has deliberately tracked Kaelen for ten years. He pretends fear and weakness to indulge Kaelen’s paranoia, slowly drawing the ruthless gang leader into his trap. As jealous fights with rivals and threats from hostile gangs unfold, their psychological game intensifies. After layers of truth surface, the two finally realize they are equally sickly obsessed with each other, abandoning the roles of captor and prey to become mutually trapped, loyal partners bound by twisted lifelong love.
