Three unaired episodes.

As Eishin Kuga—nicknamed "Mad Dog" for his unmistakable bloodlust—beats up his underlings, Yashiro watches and waits for his longtime friend to subdue him. Kanji Kageyama, an underground doctor, at last meets the young hothead whom Yashiro wants to recruit for his yakuza group. However, in light of Kuga's aversion toward Yashiro, Kageyama is ultimately left with the chore of temporarily housing him. But as Kageyama continues to insist that he has no interest in men, Kuga's shirtless presence, riotous attitude, and ceaseless teasing might just change his mind.

The stage sets in a world where guinea pigs became cars. The car that makes you relax, "Molcar". Having big round eyes, curvy butt and speedy limbs, they always explore the world with their innocent faces. Even during traffic jams, you can be eased just by looking at the butt of that Molcar in front of you. Even when they cause trouble, their furry cuteness will somehow make you forgive them!? Surrounded by situations only met by cars, it's a Mol-animation filled with cure, friendship, adventure and furry actions!

A few months after the events of Steins;Gate, Rintarou Okabe and his group of friends are invited to tag along with their acquaintance Faris NyanNyan, who is participating in a Rai-Net battle event in the United States. There, they meet up with an old colleague: Kurisu Makise, who has been recalling fragmented memories of events that happened in the other world lines in the form of dreams. She confronts Okabe, questioning him as to whether these events—particularly the incidents between the two of them—did indeed happen. [Written by MAL Rewrite]