Special Bonus Chapter

Special Bonus Chapter is the first bonus chapter of Gege Akutami's Jujutsu Kaisen.

Summary
As a bonus chapter is released to celebrate the anime's start, Yuji and his friends toss around ideas on what to do during said chapter.

Plot Details
Nobara asks Gojo about the contents of the chapter. The strongest jujutsu sorcerer responds by explaining that it celebrates the start of the anime adaptation. Yuji attempts to ask if the author missed their deadline, but he's interrupted by his sensei.

Nobara recommends that everyone shows off their casual clothes, dressing up herself. Yuji comments that she totally got that look from a fashion magazine. Afterwards, Gojo suggests putting in some weird paneling they wouldn't be able to do otherwise, followed by Yuji suggesting the use of unusual screen tones, much to Megumi's indifference.

While Gojo suggests overusing the page space, Megumi claims the fourth wall breaks could confuse the kids. The sensei sighs in defeat, recognizing that he doesn't call the shots here. Yuji mentions that it's no big deal because everyone will forget about this chapter as long as it doesn't end up in a tankōbon volume. This greatly upsets Gojo and all four sorcerers attempt to motivate themselves by grouping closely together.

As Gojo brings out a wheel with three easy-to-draw options for the setting, Yuji prepares to throw a dart. It ends up landing at the "beach" option and the former announces it should be a private beach in order to avoid drawing beach huts and umbrellas. It is then that Gojo announces that this is now a swimsuit chapter, much to Nobara's excitement. Aoi Todo ends up being the only one on the beach setting, much to Nobara's disappointment at the use of muscle gags. Megumi points out the group never had any ideas prior.

Yuji suggests singing to pass time, to which Nobara agrees. Sukuna's vessel asks Gojo about not singing with them, to which the mentor explains that he doesn't want to be irresponsible toward the implications this may have for the voice actors. However, after Yuji adds that they're just trying to cram more panels in, Gojo decides to sing along with his students. Meanwhile, Sukuna listens to the whole ordeal, which bores him out of his mind. Yuji, Megumi and Nobara then dance as a way to end the chapter.

Trivia

 * The pose Yuji, Megumi and Nobara do during the final page of this chapter is the same one Yuji does by himself at the end of the anime's first ending.