Elf wo Karu Mono-tachi EP2 - The Birth! The Invincible Party

Flashback: The teleportation ceremony is disrupted by Junpei and Celsia's spell is lost. Now the gang has to look for the five parts if they ever want to see Japan again. Celsia wants to help them (so that she could minimize the damage those morons could do to her world), but the guys laugh at her. Later, Celsia transforms herself into a weird yellow dog and helps the gang get their first piece of the incantation.