Level 1 Customizable Archmage

“Failed to convert the heart into a core.” He loved magic and dreamed of becoming a wizard, but without a core, Kang-jun ended up as a shut-in analyst. “Time remaining until the apocalypse: 1 minute.” He deciphers a magic circle that heralds the end of the world, and as a reward, it finally seems like he’ll become a wizard… “Your level will not increase beyond 1!” His level won’t go up, but something else starts rising instead?