Episode 1
SMALL THREE
24m7.0 / 10
Pyontaro, Hiroshi and Tsubame — the Small 3 — load up an odd disc from their teacher. When they're not looking, Pyontaro's little sister Futaba vanishes.
Where to watch Thunder 3
TV series
Thunder 3
2026TV-141 season8.5 / 10
Unremarkably ordinary middle schoolers, Pyontaro, Hiroshi and Tsubame, wander into an extraordinary adventure when Pyontaro's little sister goes missing.
Availability
Not streaming in United States
Thunder 3 premiered July 9, 2026. We don't have a confirmed streaming, rental or purchase option yet.
Synopsis
Unremarkably ordinary middle schoolers, Pyontaro, Hiroshi and Tsubame, wander into an extraordinary adventure when Pyontaro's little sister goes missing.
Season 1 episodes
Choose an episode, then use the watch options above for the show.
Episode 2
MULTIVERSE
24m
Stranded in a new world, the Small 3 realize they have incredible powers. They meet other versions of themselves and learn how this reality differs.
Where to watch Thunder 3
Episode 3
ALIENS
24m
Futaba's abductors subject her to tests, but she just wants her big bwudder. The Small 3 continue the search for Futaba and encounter a tense standoff.
Where to watch Thunder 3Episode information updated Jul 26, 2026
Available now in United States
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More about Thunder 3
Cast
Sayumi SuzushiroPyontaro (voice)
Natsumi KawaidaTsubame (voice)
Eri AkiyamaHiroshi (voice)Honoka MitsubachiFutaba Tezuka (voice)
Shogo SakataDoc (voice)
Taito Ban
Yuuki Hirose
Ryoko MaekawaCredits
- Written by
- Hiroshi Seko
Production details
- Status
- Returning Series
- Series type
- Scripted
- Episodes
- 12
- Original language
- Japanese
- Original title
- サンダー３
Networks & production
Fuji TVJapan
Fuji Television NetworkJapan
KodanshaJapan
HakuhodoJapan- NewGinJapan
Animax Broadcast JapanJapan
Themes
animebased on mangamiddle schoolersmultiversesupernatural mystery