Eiji Ryuugasaki

Eiji Ryuugasaki stands as one of the story's most compelling enigmas — a man who is simultaneously a devoted father to protagonist Haruto and a former key researcher at the Genesis Corporation. Following the catastrophic 'Tree of Calamity' incident, he vanished without a trace, only to resurface as a formidable and mysterious adversary. Driven by an unwavering resolve to rescue his trapped wife, he challenges his own son to a fateful battle. Beneath his cold, unreadable exterior lies a fierce paternal love — the kind that dares to defy the entire world for the sake of family.