Unaired episodes 16 and 23 included in the eighth and twelfth volumes of the VHS.

Episode 16 - Demon of the Water Planet
The crew gets a gig to retrieve a cargo of Dragonite from the bottom of the water planet, Heifong VII. But they’re in for rough waters when they come up against a dangerous creature protecting the shipment.

Episode 23 - Hot Springs Planet Tenrei
The crew ends up on a vacation planet! But not for a day at the hot springs - Gene needs caster shells and seeks the wizards that can make them. Will he find what he needs or just wind up in hot water?

(Source: Crunchyroll)