at Solo Leveling, Vol. 5 (Manga) chapter:

Jinwoo knows it won’t be long before his true power fully comes to light and the guilds and Hunter’s Association of Korea descend, seeking his allegiance. Since his training has thus far been a solo endeavor,

Jinwoo decides he ought to at least see what an A-rank raid is really like.

Joining the Hunters’ excavation team is the perfect opportunity to assess a high-level guild in action, even if his role is limited to hauling and mining.

That is, until a particularly nasty dungeon boss requires the luggage carrier to step up to carry the team as well!!