Apocalypse Harem: My Spirit Power Needs Waifus

In a brutal, monster-ridden New Tokyo, Hanyu Genichi, an A-rank Spiritual Master, clings to power by a thread. His ruthless existence is dictated by a chilling deadline: sire ten heirs by twenty, or lose everything to jealous rivals. Salvation, or something far darker, arrives in the most bizarre form: desperate refugees who are unmistakably iconic anime heroines like Erina Nakiri and Hayasaka Ai. Genichi discovers a shocking, forbidden secret: forced intimacy with these 'otherworlders' doesn't just produce heirs; it shatters his spiritual bottlenecks, fueling his dark ascension to S-rank power. His 'harem' isn't merely for heirs; it's the brutal engine of his survival. As he ruthlessly expands his collection of legendary characters, the line between protector and exploiter blurs. Can Genichi conquer this dying world, or will the very essence of his rapidly growing power lead to his ultimate damnation?