Call to Adventure! Defeating Dungeons with a Skill Board (Manga) Vol. 5 (manga)

Haruki has teamed up with a party of intermediate adventurers! Their mission? Defeat the monster swarm's boss! That's easier said than done, however, and the adventurers soon find themselves facing a far more difficult fight than expected! Can Haruki turn the tide by putting his life on the line and activating a new skill?