Kintaro JK: The Sexual Harassment Shark Strikes!

The name “Kintaro JD,” who is both smart and powerful, appears. Shark is tricked by JD in a thought experiment and is about to be turned into a shark fin stew. Kintaro JK then dispatches to save Shark, but JD is quite tough and a fierce catfight ensues. Dr. Kintaro JK, unable to stand the situation, makes a suggestion.

Nuclear material has accumulated in Kintaro JK's body, and a nuclear explosion is imminent. Kintaro and Shark decide to go to the seaside laboratory on the Kintaro. The slightest vibration could cause an explosion, and a group of mysterious people are involved in a series of crises. Will they be able to reach the institute safely?

Samewo, a great white shark, is to throw out the first pitch of a baseball game. It was supposed to be a disappearing magic ball, but people were disappearing one after another. To their surprise, Sameowo was eating people. While people were being attacked one after another, Kintaro, who had come to the baseball stadium on the sly, was asked for help and transformed to fight...

One day, mysterious cosmic rays that materialize two-dimensional objects rain down on Earth. A monster octopus drawn by a young boy comes to life and wreaks havoc in the city. Kintaro tries to make the octopus disappear while it's still inside a wall, but ends up falling for the monster's provocations, making the situation even more complicated. Kintaro JK is also in danger.

Shark is invited by a senior rat shark to join an Oreore scam, but he mistakenly calls Kintaro. Kintaro hears that Shark has broken the golden Shachihoko, and goes to find a replacement. The story gets complicated, and Kintaro and Shark decide to settle the matter in a game of baseball fist.