Instant Dungeon Arc is the 3rd story arc of the series.
Jinwoo receives a key to an E-Rank instant dungeon and goes hunting solo for the 1st time.
- In the novel, Jinwoo was displayed pulling a pen out of his inventory when Choi Yoora gave him a notepad to sign.
- Blue Venom-Fanged Kasaka is called Casaka in the novel.
- In the novel, Joohee is not shown fighting against the Stone Golem.
- Lee Hansoo, the tank-type hunter who fought against the Stone Golem, is only named in the novel.