Demon Slayer Marks Zenitsu’s Birthday With New Art and Events

Official Demon Slayer birthday celebration visual for Zenitsu Agatsuma

Demon Slayer: Kimetsu no Yaiba is marking Zenitsu Agatsuma’s birthday on September 3, 2026, with a new official birthday card, a ufotable-led celebration, and limited fan activities in Japan. The announcement is small in scale compared with a new film or series reveal, but it gives fans several concrete ways to take part: an online illustration and video program, a character-themed menu at selected ufotable venues, and a limited merchandise window. This report separates what the official pages confirm from the details that remain useful to check before making plans.

What Was Announced

Aniplex’s official news page published the birthday update on September 3, 2026. It identifies September 3 as Zenitsu’s birthday and says that a new mini-character illustration drawn by ufotable was released to celebrate it. The page links readers to the official Demon Slayer website, while the visual itself is part of the franchise’s official birthday material.

ufotable’s dedicated 2026 birthday-celebration page presents Zenitsu as the fourth installment in this year’s character birthday series. Its English-language page lists the event period as September 3 through September 29, 2026. The page frames the celebration around new artwork, a “stage” presentation for Zenitsu, merchandise, and special online content.

The Japanese version of the same ufotable event page adds the practical venue details. It lists ufotable Cafe and Machi★Asobi Cafe locations, ufotable Dining locations, ufotable Cafe TO GO, and ufotable CHARACTERS Cafe IKEBUKURO as participating venues. ufotable CINEMA is listed for merchandise sales only, and ufotableWEBSHOP is named as the online sales outlet. The venue page describes a Zenitsu birthday food item priced at 1,300 yen including tax, served at ufotable Cafe, Machi★Asobi Cafe, and ufotable CHARACTERS Cafe IKEBUKURO. It also lists a 700-yen birthday drink at selected Dining, Cinema, and Cafe TO GO locations. The food comes with a character-themed luncheon mat, while the drink comes with a postcard, according to the official event details.

There is one date detail fans should not overlook. The English page currently lists the celebration through September 29. The Japanese page describes the main event through September 27, with some listed locations and online sales continuing through September 28. Because the two official language versions do not display the same end date, the venue-specific listing should be treated as the controlling detail for any visit or order.

Why It Matters

This campaign shows how Demon Slayer continues to build character-centered fan moments around official art rather than relying only on major screen announcements. Zenitsu’s birthday is being handled as a coordinated release: Aniplex supplies the dated news update, ufotable provides the new illustration and in-person program, and the official digital channels extend the celebration beyond fans who can reach a Japanese cafe.

The physical program is also unusually specific. It is not simply a generic collaboration label attached to existing goods. The official menu descriptions connect the food and drink to Zenitsu’s birthday visual, and the attached luncheon mat and postcard give the visit a defined collectible purpose. At the same time, the event’s online illustration gallery and video stream make the character celebration accessible as a piece of official franchise content even when the cafe experience is out of reach.

That combination matters for international fans because it makes the limits of access visible. The online material can be followed from abroad, but the food, bonuses, and venue merchandise are tied to locations in Japan. This is a useful distinction between participating in the celebration digitally and obtaining its physical items.

Context for International Fans

The most time-sensitive online item is ufotable’s official YouTube program. The event page says it showcases memorable Zenitsu scenes through a collection of visuals and remains available until 11:59 p.m. JST on September 3. That deadline is 2:59 p.m. UTC on September 3, or 10:59 a.m. Eastern Time and 7:59 a.m. Pacific Time in the United States. Fans should use the official link rather than assume that an unofficial reupload will remain available.

ufotable also links an official Pinterest gallery containing selected Zenitsu illustrations, including newly drawn special illustrations. The page provides the gallery as an official celebration channel, but it does not state that every image or physical item is available in every country. Likewise, the Japanese event page names ufotableWEBSHOP for online sales but does not confirm international shipping, overseas payment support, or delivery dates in the information reviewed for this report. Those conditions are therefore not yet confirmed for readers outside Japan.

For visitors in Japan, the participating venue matters more than the broad event title. Some locations serve the birthday food or drink, while ufotable CINEMA is identified for merchandise sales only. Menu availability can change, and the official page notes that the content may be changed depending on circumstances. The 1,300-yen and 700-yen prices are the listed tax-included prices, not a guarantee that a particular location will still have stock on a chosen day.

What Happens Next

On September 3, fans should first check the Aniplex birthday-card post and the ufotable event page, then use the official YouTube link before the 11:59 p.m. JST cutoff. Anyone planning a physical visit should confirm the venue list and the latest end date on the official Japanese page, especially because the localized pages currently differ on the final day.

The next meaningful confirmation to watch is not a rumor about new anime production. It is the official update that clarifies venue availability, online-shop shipping conditions, and the date applicable to each participating location. Until ufotable or Aniplex provides those details, overseas access to the physical bonuses and merchandise should be considered unconfirmed.

Information was checked on September 3, 2026 at 10:56 JST.

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