Sin & Punishment: Star Successor

Sin and Punishment: Star Successor is a rail shooter video game set in a post-apocalyptic world where humanity faces threats from mutated creatures known as Ruffians. The story follows Isa Jo, the son of the protagonists from the original game, and Kachi, a mysterious young woman with unique powers. Together, they are members of the armed organization, the Guard, tasked with protecting humanity from the Ruffians and the organization known as the Outer Heaven. The game explores themes of genetic destiny, government conspiracies, and the fight for humanity's future, with Isa and Kachi's unique abilities and connections to the original "sinners" driving the narrative.