Dungeon Friends Forever Vol. 3 (manga)

With the adventurer Van visiting the dragon overlord Ryuka in her dungeon on a regular basis, the Four Idiots of the executive board are having the time of their lives watching sparks start to fly between the two adorable childhood friends. That is, however, until monsters from a rival dungeon arrive, hell-bent on making Ryuka their new boss. It’s dungeon vs. dungeon as Ryuka’s friends battle in the stupidest contest imaginable to prove they are her biggest simps!