Flame 3: Is Bigger Better?

Ghastly Prince Enma Burning Up · Episode 3 · “Flame 3: Is Bigger Better?”

It's Tokyo in the 1970s, and evil youkai (goblins) are attacking the human world. The "Youkai Patrol" - Enma, Princess Yukiko, Kapaeru, and Grandpa Shappo - are sent from hell to exterminate them. (Source: Anime News Network)