An Indonesian transmigrator assumes the identity of Rokuhara Ren, stepping into a living, breathing anime universe where 2D fantasies materialize before his eyes. Armed with ambition and opportunity, he pursues his harem aspirations, swiftly ensnaring his homeroom teacher Nakano Itsuki and classmate Maria Mikhailovna Kujou into his web of seduction—both bearing his children within a single year. His comfortable existence shatters upon encountering Yotsuba Miko, Gentōga Keitarō, and Ayase Momo, complications that pale beside a darker revelation: Campiones exist within this world. Fatherhood and supernatural threats collide, forcing Ren to confront an impossible choice. To protect his offspring and claim his place in a world beyond his comprehension, he must transcend his mortal limitations and ascend to Campione status himself. Follow the journey of a shameless schemer's metamorphosis into a legendary power recognized and feared across all realms. A tale woven with slow-burn tension, psychological manipulation, forbidden romance, loss, and the sins of an anti-hero who will stop at nothing to dominate his destiny.