Reborn as the Demon King's Brother

Kaito, a jaded otaku, finds himself reborn into the opulent yet perilous world of High School DxD, not as a background character, but as Sirzechs Gremory's younger, forgotten brother. Gifted with an uncanny charm and intellect, he's also the estranged father to Utaha Kasumigaoka and Eriri Spencer, a secret that binds him to two powerful, unsuspecting human families. Beneath his gentle demeanor, Kaito carries the crushing weight of past regrets and a deep-seated fear of repeating his failures, especially when it comes to fatherhood. As the supernatural factions vie for power, Kaito must navigate the treacherous politics of the underworld and the delicate complexities of his unexpected family. His very existence threatens to unravel hidden truths, forcing him to confront his painful past while protecting those he inadvertently sired. Can a man burdened by past cowardice rise to become a true protector in a world of devils and angels, especially when his own daughters are entangled in its machinations?