Ep. 3: The group visits a museum where Etna's bounty and dimensional shifts disrupt their journey
Aired on April 19, 2006

Laharl, Flonne, and Etna stop at a giant museum filled with artifacts, guided by prinnies. Etna has secretly placed a bounty on Laharl for his return to the Netherworld. Strange events occur at night when an artifact resonates due to Vulcanus. The next day, Laharl finds Flonne and Etna have swapped personalities. Captain Gordon, Jennifer, and Thursday fail to assist. Vyers instructs Flonne, Etna, Laharl, and a prinny to enter a dimensional door to restore their original personalities.
Episodes
- Ep. 1 · Angel Flonne Awakens Demon Prince Laharl in Tomb Amidst Pursuit
- Ep. 2 · Flonne loses her pendant while Etna escorts Laharl to the castle amid an archangel attack.
- Ep. 3 · The group visits a museum where Etna's bounty and dimensional shifts disrupt their journey
- Ep. 4 · Laharl and Eta raid castles for wealth while Prinnies strike over unpaid wages.
- Ep. 5 · Laharl discovers a bounty on his head while navigating deception and traps in a demon slayer's estate.
- Ep. 6 · Etna’s Embarrassing Secret
- Ep. 7 · Laharl encounters his alleged sister Maharl amid biker empresses and a doll mystery