Mike Smith
A Star Brighter Than The Sun debuts in Japan on TBS on October 2, 2025, and streams on Prime Video in more than 240 countries and territories worldwide starting October 3, 2025.
A Star Brighter Than The Sun (2025) Synopsis
A Star Brighter Than The Sun (2025), also known as Taiyō Yori mo Mabushii Hoshi, is the long-awaited anime adaptation of Kazune Kawahara’s hit romantic manga. Produced by Studio KAI and distributed globally by Amazon Prime Video, this series combines heartfelt coming-of-age drama with the charm of high-school romance.
A Star Brighter Than The Sun follows Sae Iwata and Kōki Kamishiro, childhood friends whose relationship changes as they enter high school. Sae realizes her feelings for Kōki have deepened, but discovers she’s not the only one interested in him. Amidst teenage emotions, friendship, and self-discovery, Sae must figure out where her heart truly lies. Kawahara (creator of My Love Story!!, High School Debut, Aozora Yell) is known for heartfelt, character-driven storytelling, which shines through in this adaptation.
When Does A Star Brighter Than The Sun Premiere?
A Star Brighter Than The Sun premieres in Japan on October 2, 2025 at 11:56 p.m. JST on TBS and its affiliates. It will stream worldwide on Prime Video starting October 3, 2025 at 12:56 a.m. JST, offering same-day access after the Japanese broadcast. The anime held its world premiere event at Anime Expo in July 2025.
Where to Watch A Star Brighter Than The Sun
United States
You can watch A Star Brighter Than The Sun exclusively on Amazon Prime Video in the United States starting October 3, 2025. All episodes stream on the Prime Video website and app across smart TVs, mobile devices, and browsers. Offline downloads are also supported for subscribers through the Prime Video app.
Canada
Canadian viewers can stream A Star Brighter Than The Sun on Amazon Prime Video the same day it airs in Japan. Every episode is included with a Prime membership and available in HD or 4K on multiple devices.
United Kingdom
In the UK, A Star Brighter Than The Sun streams on Amazon Prime Video beginning October 3, 2025. Episodes are available weekly alongside the Japanese broadcast, included with a standard Prime membership.
Australia
Australian fans can watch A Star Brighter Than The Sun on Amazon Prime Video from October 3, 2025. Prime Video offers HD and 4K playback, offline downloads, and compatibility with smart TVs, phones, and tablets.
A Star Brighter Than The Sun Season 1 Episode Guide
Here are the episodes:
- Episode 1 – Premiere date: October 2, 2025 (TBS Japan) / October 3, 2025 (Prime Video)
- Episode 2 – Premiere date: October 9, 2025
- Episode 3 – Premiere date: October 16, 2025
A Star Brighter Than The Sun Main Cast and Characters
- Minori Fujidera as Sae Iwata
- Yūki Ono as Kōki Kamishiro
- Hina Yomiya as Hisui Onodera
- Taito Ban as Yōta Ayukawa
- Mutsumi Tamura as Mio Kagawa
- Ryōta Ōsaka as Yūshin Izawa
- Haruka Shiraishi as Subaru Kamishiro
Staff:
- Director: Sayaka Kobayashi (Studio KAI)
- Series Composition: Yasuhiro Nakanishi
- Character Designs: Jin Feng Zeng
- Music: Natsumi Tabuchi & Miki Sakurai
- Opening Theme “Stellar Days” by Motohiro Hata
- Ending Theme “Saishin-wa” by Wanuka
Can You Watch A Star Brighter Than The Sun Online for Free?
Yes — if you’re a new subscriber to Amazon Prime Video, you can use the service’s free trial period to watch A Star Brighter Than The Sun at no additional cost. Just sign up for Prime, stream the episodes, and cancel if you don’t want to continue.
Is A Star Brighter Than The Sun Suitable for All Ages?
This series is a teen-focused romantic drama. While it centers on high-school characters and themes of first love and friendship, it may include mild romantic tension and emotional situations. Most viewers aged 13+ should find it appropriate, but parental discretion is advised for younger children.
Where Can You Download A Star Brighter Than The Sun Episodes?
Subscribers can download episodes directly from Prime Video for offline viewing on mobile devices and tablets. Downloads remain available as long as your Prime membership is active and within Amazon’s standard offline limits.
FAQs
Q1: Who created A Star Brighter Than The Sun?
Kazune Kawahara, acclaimed for My Love Story!!, launched the manga in 2021 in Bessatsu Margaret. The anime is produced by Studio KAI.
Q2: Will the anime cover the entire manga?
Season 1 is expected to adapt the early arcs of the manga. Future seasons have not yet been announced but will likely depend on viewership and manga progression.
Q3: What devices support streaming?
Prime Video is available on smart TVs, Fire TV, Roku, Apple TV, PlayStation, Xbox, web browsers, iOS/Android devices, and tablets. Offline downloads are supported on mobile.
Q4: Does the anime include the opening and ending theme from the teaser?
Yes. “Stellar Days” by Motohiro Hata and “Saishin-wa” by Wanuka are the confirmed opening and ending themes.
A Star Brighter Than The Sun Preview
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