Substitute Bastard Teacher

In a world where endless magic and possibilities linger, 19-year-old Kynn, once a follower of the villain Malachi who caused the famous Shadow War in the land of Enchantia, embarks on a path as a teacher at a magic academy for his own mysterious and dark goals. But here's the twist: the academy was established by the very hero who defeated Malachi, a hero named Kanan who battled Kynn in the Shadow War…but Kynn’s face was covered. As Kynn grapples with his dark past, he must keep his involvement in the Shadow War a secret. To make matters worse, his former comrades are hot on his trail, seeking retribution and the heart of Malachi. Can Kynn conceal his past, hiding it from Kanan and the rest of the kingdom and the academy and teachers, and teach his new students the right way at the Arcane Academy to not raise suspicion?