Tenshi no Hane to Akuma no Shippo

Luca is a devil who has infiltrated an academy exclusively designed for angels. Rather than remaining hidden in the shadows, he forms an unexpected contract with an enigmatic angel named Haniel. This binding agreement elevates his status within the institution, granting him the official title and responsibilities of a knight of the school. However, Luca's new role comes with heavy burdens. A looming prophecy warns of a "great catastrophe," and stopping this disaster becomes his primary mission. Because of the impending threat, he finds himself unable to leave the academy grounds. Trapped within its walls, Luca must set aside his demonic origins and work alongside the very beings he was never meant to associate with. To unravel the mysteries surrounding the prophecy and survive the dangers ahead, he joins forces with unlikely allies. Among them is Lilith, a striking angel distinguished by her red wings. Together, this mismatched group must navigate their differences and uncover exactly what fate has in store for them before the foretold catastrophe consumes everything they know.