Updated September 7, 2026. The new Sirotan anime now has a confirmed Japanese premiere date and broadcast window, along with its main cast and official distribution channels. The point that still requires caution is availability outside Japan: as of this date, the official sources reviewed do not detail a Brazil-specific release or YouTube territorial rules.
What is confirmed before the premiere
| Item | Status as of Sep. 7, 2026 |
|---|---|
| Japanese premiere | October 3, 2026 |
| TV broadcast | TV Asahi, Saturdays at 4:29 p.m.; the PicoAni page identifies the TV airing as Kanto-local |
| Digital distribution in Japan | The anime's official YouTube channel, TVer, TV Asahi Douga, ABEMA and other services, starting at 4:30 p.m. on Saturdays |
| Format | A production under the PicoAni short-anime brand |
| Total episode count | Not yet stated in the official sources reviewed |
| Brazil | No Brazil-specific licensing, platform or territorial-availability announcement confirmed as of this date |
When and where Sirotan premieres in Japan
TV Asahi has set the premiere of Sirotan for October 3, 2026. It will air weekly on Saturdays at 4:29 p.m. Japan time. The official PicoAni page lists the series in that slot and states that the television broadcast is local to the Kanto region.
TV Asahi's announcement also says digital distribution begins at 4:30 p.m., one minute after the TV broadcast starts. The listed services include the anime's official YouTube channel, TVer, TV Asahi Douga and ABEMA, among others. That list confirms official distribution within the Japanese release ecosystem; it should not automatically be treated as a guarantee of international access.
Episodes: what is known and what has not been announced
Sirotan is part of PicoAni, TV Asahi's brand for short anime. That confirms a short-form approach, but as of September 7 the official materials reviewed do not give the exact runtime of each episode or the total number of episodes planned for this production.
Two episode-related details are concrete, however. First, episodes are set to be distributed on the anime's official YouTube channel. Second, the first episode will feature a seaside story in which Sirotan and friends appear to be playing with what the announcement describes as fairly serious equipment. In that update, the official website did not yet provide an episode title or runtime.
It is also important not to confuse the new series with the earlier web animation. In 2017, Sirotan: Sirotan ga Ippai! began releasing on YouTube and ultimately reached 24 episodes. That count belongs to the older production and is not evidence that the 2026 anime will have the same number.
Confirmed main cast
- Sirotan: Yuki Aoi
- Rakkoinu: Miyu Hanasaki
- Sheru: Rina Hidaka
- Ramune: Riyo Iwai
Yuki Aoi had already been announced when the project was first revealed. Miyu Hanasaki, Rina Hidaka and Riyo Iwai were confirmed later alongside the main trailer released in June.
Staff and the series' premise
The anime is based on the character created by Creative Yoko. Arisa Okada directs, with Atsuko Yamamoto as assistant director. Sei Yoshitsuki handles series composition and scripts, while Shota Kowashi composes the music. Animation is produced by Lesprit, with TV Asahi and Shin-Ei Animation involved in planning and production.
The official introduction describes a gentle everyday world in which Sirotan stays positive while spending time with Rakkoinu, Sheru and Ramune. The series is positioned around small adventures and comforting daily situations, consistent with PicoAni's focus on short stories designed for quick viewing.
What is confirmed for Brazil?
As of September 7, 2026, the official sources reviewed do not contain a Brazil-specific premiere announcement, a licensed platform for the country or confirmed information about Portuguese subtitles. The fact that the production lists its official YouTube channel as a distribution outlet does not, by itself, prove that every episode will be playable in every territory.
The safest reading is therefore to separate two things: in Japan, the premiere, time slot, TV channel and digital services have already been announced; in Brazil, availability still needs to be confirmed closer to release, when the official channel and any international partners may clarify regional restrictions, language options or licensing.
What to check closer to October 3
- the official runtime of each episode;
- the total episode count or season length;
- whether the official YouTube channel makes the episodes available in Brazil;
- whether Portuguese subtitles or another localized option are offered;
- whether an international platform announces additional licensing.
For first-party updates, the best references are the official Sirotan site on TV Asahi, the anime's official YouTube channel and the official PicoAni page. TV Asahi's September 1 announcement details the premiere and digital distribution: official release.
