Please, Grant My Last Wish - S1.E3

In the final episode of this three-part arc, our heroes converge on the throne room (only after contending with a hall of enchanted mirrors and Gokudo's abortive attempt to throw in with their enemies). The Magic King apparently didn't get the memo that Gokudo's rotten to the core, though, because he attacks the party with a knockout gas that only affects people with 'a good heart'. While his mates fall into a drugged stupor, Gokudo merely laughs and cuts loose with his very own 'gas attack', which, erm, 'revives' the lot of them. (I did warn you this wasn't an intellectual programme, right?) In the end, this whole epic combat turns out to be a marital spat between the Magic King and his 'lovely' wife... the same wrinkled crone that Gokudo ripped off two episodes back, who's also the genie's boss.