Man on the Ark: Revitalizing Kazdel

[Invincible] + [Multiple Heroines]

Roy, having traveled to the continent of Terra, discovers he's the only remaining test subject from the former Cradle of Humanity Project.

The Demon King's crown appears between his horns. Having struck a deal with successive Demon Kings, he resolves to end Kazdel's civil war.

Under his spell, Originium disease is no longer a terminal illness, and with the anti-Originium device, natural disasters are no longer a threat to civilization. Kazdel ushers in its own era of two kings.

Roy: Strength is the foundation of national security, and technology is the path to national development.