SSS RANK DUNGEON DE KNIFE ICHIHON TEWATASARE TSUIHOU SARETA HAKUMA DOUSHI: YGGDRASIL NO NOROI NIYORI JAKUTEN DEARU MARYOKU FUSOKU O KOKUFUKUSHI SEKAI SAIKYOU E TO ITARU manga, SSS Rei, a white mage who belongs to an A-rank adventurer party, is expelled from the party as a useless person who cannot move after using Heal once.Only one dagger knife was handed over.Left alone in the SSS rank dungeon, Labyrinth of Yggdrasil, Rei prepares for deathYou e the first human to reach this far. As if being guided by something, Rei meets Norn, a mysterious girl who lives in the lowest level of the dungeon, World Tree! Rei, who obtained infinite magical power, was trained by Norn to survive in this harsh dungeonNorn, I there was something left unfinished. The boy who has become the strongest returns to earth with only one knife in his hand! The strongest high fantasy begins here!