Back
Official cover art of Confidence
Cover art © ONE, Yusuke Murata / Shueisha. Not an original work of Daddy Jim Anime. Displayed for editorial commentary and review purposes.

Confidence

Manga Chapter

Confidence is a comedic bonus chapter released with Volume 17 of One-Punch Man. It picks up after Speed-o'-Sound Sonic swallows a Monster Cell, tracking the ninja's mistaken conviction that he has evolved into a powerful monster when he has really just endured a rough night.

Volume: 17
Release Date: August 3, 2018
Chapter Type: bonus_chapter
Anime Episode: Episode 25
Text Size

Summary

Having consumed a Monster Cell, Sonic spends the entire night wracked with diarrhea. Once the ordeal finally passes, he concludes that his body has been fundamentally remade, even though his outward appearance has not changed at all.

Text Size

Key Events

Sonic nurses bitter feelings toward Gale Wind and Hellfire Flame for never warning him of the side effect, then sets the grudge aside since joining the Monster Association was never his intention. Sensing a lighter, stronger frame, he brims with self-assurance and vows he will need time to master his supposed new form.

Text Size

Notes

The joke lands in the reveal that Sonic merely shed two kilograms overnight, mistaking ordinary weight loss for a monstrous transformation.

Share this resource

Frequently Asked Questions

Did Sonic eat a Monster Cell?

Yes. In the Confidence bonus chapter, Speed-o'-Sound Sonic consumes a Monster Cell and spends the entire night suffering from severe diarrhea as a result.

Why does Sonic think he has transformed into a monster in the Confidence chapter?

After enduring a rough night from the Monster Cell, Sonic feels lighter and concludes his body has been fundamentally remade, even though his outward appearance never changes at all.

Who does Sonic blame for not warning him about the Monster Cell's side effects?

In the Confidence chapter, Sonic nurses bitter feelings toward Gale Wind and Hellfire Flame for never warning him about the side effects of the Monster Cell, though he sets the grudge aside since joining the Monster Association was never his intention.

What is the joke behind the Confidence chapter's title?

The joke in Confidence is that Sonic's supposed monstrous transformation is really just the result of shedding two kilograms overnight, which he mistakes for a fundamental physical change.

Which volume of One-Punch Man includes the Confidence bonus chapter?

Confidence was released with Volume 17 of One-Punch Man on August 3, 2018, and its story was also adapted into the anime as Episode 25.

Sources & Information

Looking for more on Confidence? The One-Punch Man Wiki on Fandom has a dedicated page with community notes.

View on Fandom

This content is original writing by Daddy Jim Anime based on the One-Punch Man anime series, manga, and official materials. One-Punch Man was created by ONE and Yusuke Murata, published by Shueisha, and animated by J.C.Staff and Madhouse. All rights to One-Punch Man and its characters belong to their respective owners. Episode and chapter references are cited where applicable.

Rights holders

All rights belong to their respective owners.

Character and scene imagery on this site is original artwork by Daddy Jim Anime, not screenshots or licensed imagery. Official cover art is used on three types of pages for editorial commentary:

  • Movie pages: theatrical posters and key visuals, credited to J.C.Staff, Madhouse and Shueisha.
  • Game pages: official box art, credited to the game's respective publishers.
  • Manga chapter pages: volume covers, credited to Shueisha and ONE and Yusuke Murata.
  • Licensed imagery: Photographs of real people, including creators, voice actors and production staff, are used under licence from the rights holder or the applicable stock provider, or under the terms of a public licence permitting editorial use. Each such image is reproduced in its licensed form and remains the property of its owner.
  • Exceptions: Limited exceptions to the practices described above may apply to individual entries. Where an exception applies, it is noted on the entry itself alongside the applicable attribution. Rights holders may contact us regarding any attribution and it will be reviewed promptly.

Help Us Keep This Wiki Accurate

Daddy Jim Anime maintains this encyclopedia. If you spot an error, a translation issue, or something that doesn't look right, let us know.