Save a female adventurer from a monster, and you get to know each other.' That's roughly what his grandfather said. Bell Cranel's only problem is that she saved him.

Desperate to support Bell despite her jealousy, Hestia pleads with another, more powerful goddess to make him a weapon that will keep up with his rapid growth.

With the monster in pursuit, Bell begins to question if he is strong enough to defeat it. But Hestia won't let him give up that easily.

Bell is advancing in the dungeon with Lili's help, and he just keeps growing! After reading a book left at the tavern, he gets more than he bargained for.