Suppose a Kid From the Last Dungeon Boonies Moved to a Starter Town?

Suppose you visited an early dungeon but encountered three final bosses? (1x9)

: 01, 2021

Witnesses report a huge snake monster in a dungeon near the city. The king sends the cadets to investigate. However, Alka, Micona, and the mysterious man Sou all get involved for their own reasons.