Academy Saikyou no Mob Healer: Shinige Sekai no Mob ni Tensei shita Ore wa, Hazure Job "Healer" to Gensaku Chishiki de Musou suru

"Dungeon Academia," a famous romance action RPG known as a brutal death game. Allen Claude is reincarnated into that world as a mere mob character with the worst possible job: Healer. If nothing changes, an instant death route awaits him. However, armed with the game knowledge he mastered in his previous life, Allen decides to defy fate itself.

(Source: Kodansha, translated)