S01E0124:351. SMALL THREEPyontaro, 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.
Thunder 3 Season 1 – Watch online
12 episodes · since July 9, 2026
All episodes of season 1 of Thunder 3: summaries, air dates, ratings and legal platforms (dubbed or subtitled depending on the platform).
S01E0124:351. SMALL THREEPyontaro, 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.
S01E0224:332. MULTIVERSEStranded in a new world, the Small 3 realize they have incredible powers. They meet other versions of themselves and learn how this reality differs.
S01E0324:393. ALIENSFutaba'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.
S01E0424:204. MR. SEGAMIAs college student Segami struggles with his dystopian world, a hot schoolmate hands him an enticing flyer. Hoping to meet girls, he finds something else.
S01E0524:545. REBELLIONWith his mind in a whirl, Segami runs into the Small 3. They witness a bold fighter pilot pit his life against an alien ship. Will it light a fire?
S01E0624:126. GAME ONThe Rebellion announces a guerrilla attack in Shibuya and Segami resolves to join. Meanwhile, a distraught Futaba stumbles upon a furry winged creature.
S01E0724:307. COUNTERATTACKAliens surround a sleeping Futaba! In Shibuya, Segami and his comrades fight fiercely but lose ground. As he retreats, he spots Tashiro under attack.
S01E0824:598. THE STRANGERSFutaba faces off against a squad of alien soldiers to protect her new friend. Facing heavy losses, Segami and the Rebellion turn to their secret weapon.
S01E0924:539. THE STRONG MENGenius commandeers an alien walker and leads a counterattack. But two fearsome alien soldiers are en route. Meanwhile, Doc and the others seek answers.
S01E1024:3010. TIME IS UPAs the Small 3 soar toward Shibuya, Genius runs out of options against a relentless alien warrior. Reinforcements arrive — but will it be enough?
S01E1124:4011. WE ARE “THUNDER ３”!!The "Small Three" arrive as live-streamed reinforcements to battle alien invaders, save Futaba, and officially debut as "THUNDER 3".
S01E1224:3812. FINAL ATTACKThe cry rings out around the world for the Thunder 3! Humanity's last hope and their saviors against the aliens!Where to stream Thunder 3 Season 1
Subscription
Netflix
Netflix Standard with Ads
NetflixNetflix Standard with AdsAvailability provided by JustWatch via TMDB, details on TMDB. Offers in the United States, subject to change.
About season 1
Season 1 of Thunder 3 has 12 episodes, aired from July 9, 2026 to September 30, 2026 on Fuji TV. Episodes run 24 minutes on average.
Frequently asked questions about Thunder 3 Season 1
How many episodes are in Thunder 3 Season 1?
Thunder 3 Season 1 has 12 episodes.
When did Thunder 3 Season 1 air?
The first episode aired on July 9, 2026 and the last one on September 30, 2026.
Where to watch Thunder 3 Season 1 online?
In the United States, Thunder 3 is available with a subscription on Netflix and Netflix Standard with Ads (source: JustWatch via TMDB, offers subject to change). Availability of each season depends on the platform.