SSS Rank Dungeon de Knife Ippon Tewatasare Tsuihou Sareta Hakuma Doushi

is a Japanese light novel series written by Kami to Ichi, with illustrations by Ninsuke. The series began publication on November 17, 2022 by ASCII Media Works under their Dengeki no Shin Bungei publishing imprint.

Synopsis
This is the story of how the weakest boy with only one knife becomes the strongest. Rei, a white mage who belongs to an A-rank adventurer party,  He is expelled from the party as a useless person who cannot move once he uses "Heal". "Only one dagger knife was handed over." Rei, who was left alone in the SSS rank dungeon [Labyrinth of Yggdrasil], prepared for death...  "You're the first person to reach this far." As if being guided by something, Rei meets Norn, a mysterious girl who lives in the lowest layer of the dungeon [World Tree]! Rei, who obtained infinite magical power by drinking the water of the spring in the [World Tree], was trained by Norn to survive in this harsh dungeon... "Norn, I... there was something left unfinished." "The boy who has become the strongest returns to earth with only one knife in his hand...!" "The weakest boy can become matchless with a single knife!" The strongest high fantasy begins here!