Bofuri: I Don't Want to Get Hurt, so I'll Max Out My Defense., Vol. 10 (light novel‪)‬

The eighth event ended spectacularly, with Maple Tree and the game’s two best guilds teaming up in an epic boss battle. Now that things are quieting down, Maple and Sally head out to explore a hidden dungeon together—a flying castle where one false move spells death...for anyone else, at least. They take selfies, act like tourists, and enjoy the simple pleasures of just hanging out. However, that laid-back vibe may not last long with the appearance of new rivals: a girl wreathed in lightning, an intimidating AOE specialist, a master archer, and a guild master dressed as a maid. There’s no doubt the best players in the game are watching Maple Tree closely and preparing for future battles!