世界最強の後衛 ～迷宮国の新人探索者～
The World's Strongest Rearguard
Sekai Saikyou no Kouei: Meikyuukoku no Shinjin Tansakusha
Action · Adventure · Fantasy
After a fatal accident, overworked office worker Arihito Atobe is reborn in the Labyrinth Country as a Seeker with the rare Rearguard class—an all-purpose support role that excels in attack, defense, and healing. Joined by a fierce demi-human mercenary and his former boss, Arihito dives into deadly...
Synopsis excerpt via AniList, originally from Crunchyroll.