Exoda Cero Claw, mythologized as "Satan," governs the island of Shina Dark with an unexpected demeanor. Despite legends painting him as a hedonistic destroyer, he maintains a calm, unhurried disposition, finding solace in tranquil pastimes like fishing. His fearsome reputation emerged as a fabrication during centuries of dormancy, spurring kingdoms to dispatch over a thousand women as sacrificial tributes. Awakening to this unintended consequence, he assumes responsibility for the ostracized women, transforming Shina Dark into a sovereign state. Governance falls to exiled princesses Galett and Christina, whom he designates as symbolic figureheads—the Twin Moon Princesses. Though wielding immense power, he shuns direct rule, preferring to bolster infrastructure and defenses from the shadows. His priorities center on stability and purpose: mobilizing militias, resolving resource shortages, and fostering communal resilience.

Historical accounts distort his nature, amplifying tales of depravity during his absence. In truth, he upholds a strict ethical code, rejecting violence toward women and abuses of authority, yet strikes decisively against injustice. He adopts Marple, a young sacrifice abandoned at his domain, and navigates a respectful but detached rapport with Galett and Christina—both nursing unspoken affections. While projecting indifference to governance, his actions reveal a steadfast commitment to Shina Dark’s survival. He balances reclusive tendencies with protective duties, relying on allies like butler Vincent and combat-ready android maid Noel. Strategic ingenuity surfaces through indirect maneuvers: orchestrating scenarios to resolve conflicts or strengthen unity discreetly.

No expanded lore exists beyond the original manga and its animated music videos. His narrative remains anchored in reshaping his legacy, cultivating Shina Dark into a self-sufficient haven, and confronting societal prejudices through quiet, relentless redemption.