Akuyaku◇Kyōsōkyoku

Akuyaku◇Concerto ~Oingo and Boingo~ (アク役◇協奏曲～オインゴとボインゴ～) is the third ending of JoJo's Bizarre Adventure: Stardust Crusaders and the fourth overall ending of the JoJo's Bizarre Adventure anime.

The ending was featured at the end of Episode 53 and was sung by Makoto Yasumura and Motoko Kumai, Oingo and Boingo's respective Seiyuu.

Ending Description
The ending is entirely animated in the style of Tohth's illustrations, beginning first with Oingo and Boingo hanging out of a cartoon airplane which flies offscreen. The airplane is then shown colliding into the orange-bomb Oingo made, bouncing off into a purple moon and finally into a cartoon sun - causing a lollipop to fall out of its mouth. Panning out, the brothers are shown in the deserts of Egypt making rapid arm gestures as they continuously cut closer to the screen. Both brothers raise their hands as money flies into the air, which then transitions to a new page of Tohth with Oingo walking on a sidewalk. Tohth's page turns as Oingo smiles and quickly spins his head clockwise until it transforms into Jotaro's face. Oingo continues this, transforming into Polnareff, Iggy and Joseph before returning to normal. Oingo's card appears - highlighting his Stand, Khnum. The page turns to reveal Boingo walking down a sidewalk as a box of donuts and binoculars hover behind him. Boingo is shown to be reading from Tohth, transitioning to him sitting on a hillside as his Stand's card also appears.

In a format similar to a manga panel, the brothers both dance together while several cartoonish characters and symbols float by in a background consisting of a pink skyline. Both brothers jump offscreen onto a new page, continuing to dance as multiple prophecy pages from Tohth horizontally scroll by. The screen zooms in on both brother's faces before cutting to another page, where pictures of the comic artist and Jotaro brutally dying hover above a twilight covered sky. Oingo and Boingo continue their rapid arm movements from earlier before transitioning to a panel of the brothers casually pointing at each other. Both brothers are then being beaten up by hired thugs before cutting to them lying in an ambulance, covered in bandages. As the ending comes to a close, the hospital where both brothers recover is shown before fading to black.

Trivia

 * This is the first ending theme in the whole of the JoJo anime not to be a well known song performed by an established band, but instead is an original song created for the anime and sung by the voice actors of Oingo and Boingo.
 * During the bit where Oingo transforms his face into each of the protagonists he transforms his face into Iggy's near the end, it's never specified in the manga or the anime if his Stand is able to let him replicate an animal's face as well as a human's.