Triangle
トライアングル
We checked 8 streaming services in India on 04 Jun 2026 at 08:29 IST
About
The series starts with the murder of a 10-year-old girl in 1984. 15 years later, after the case goes unsolved and passes the statute of limitations, a doctor named Goda Ryoji suddenly quits from his hospital and eventually becomes a detective. In 2008, he meets Sachi, a traveling artist in Paris, and shortly after Goda's return to Japan, he becomes involved in the expired murder case when another detective receives an anonymous phone call.
Cast
Goro Inagaki
as Kuroki Shun
Yosuke Eguchi
as Goda Ryoji
Hirosue Ryoko
as Sachi
Saki Aibu
as Goda Yui
Masato Sakai
as Shimano Takaya
Shosuke Tanihara
as Tomioka Yasushi
Kuranosuke Sasaki
as Akimoto Ryo
Fumiyo Kohinata
as Maruyama Keita
Ren Osugi
as Katsuragi Hitoshi
Jun Fubuki
as Katsuragi Kiyoko
Kinya Kitaoji
as Kuroki Shinzo
Seasons
Episodes
Season 1
Who killed the girl?
The series starts with the murder of a 10-year-old girl in 1984. 15 years later, after the case goes unsolved and passes the statute of limitations, a doctor named Goda Ryoji suddenly quits from his hospital and eventually becomes a detective.
Letter from the past
The suspect
Shocking confession
The obliterated truth
The remorseful killer
Shanghai night, the bond that tears
Alibi
Where does Triangle rank today?
Triangle is #4352 on the CineFlixo Daily Streaming Charts today.
- Highest: #4352
- Top 10: 0 days
- Top 100: 0 days
Watch Triangle Online Free — All Episodes in HD
If you've been searching for Triangle all episodes in HD, CineFlixo has you covered. This well-rated Japonés mystery and drama title from 2009 is available to stream instantly — no ads to fight through, no paid subscriptions, no annoying redirects.
About Triangle
The series starts with the murder of a 10-year-old girl in 1984. 15 years later, after the case goes unsolved and passes the statute of limitations, a doctor named Goda Ryoji suddenly quits from his hospital and eventually becomes a detective. In 2008, he meets Sachi, a traveling artist in Paris, and shortly after Goda's return to Japan, he becomes involved in the expired murder case when another detective receives an anonymous phone call. Across 1 season and 11 episodes, originally airing on Fuji TV.
Triangle Cast and Characters
The cast features Goro Inagaki (as Kuroki Shun), Yosuke Eguchi (as Goda Ryoji), Hirosue Ryoko (as Sachi), Saki Aibu (as Goda Yui), and Masato Sakai (as Shimano Takaya). Their performances are a major reason Triangle has built such a passionate audience.
Where to Watch Triangle Online
Want to watch Triangle online without paying? CineFlixo is the easiest way. Click play and the series starts in seconds. No popups, no "5 day trial that auto-charges" — just the show.
▶ Watch Triangle NowWhy People Are Watching Triangle
Triangle flies under the radar but it deserves your attention. What makes it work is emotional weight that hits where it counts and tight pacing that earns its twists. If you enjoy Japonés storytelling that doesn't follow the same tired beats, this is the kind of show you'll end up recommending to friends.
Frequently Asked Questions about Triangle
Where can I watch Triangle online for free?
You can watch Triangle online free on CineFlixo. Just open the page and hit play — no signup, no subscription, full HD streaming on phone, tablet, or desktop.
How many episodes does Triangle have?
Triangle has 11 episodes across 1 season. All episodes are available to stream right here on CineFlixo.
Is Triangle good? What's the rating?
Triangle holds a 7.2/10 rating based on 6 reviews — well above average.
Who is in the cast of Triangle?
The main cast includes Goro Inagaki, Yosuke Eguchi, Hirosue Ryoko, and Saki Aibu, plus a strong supporting ensemble.
Is Triangle available in Japonés?
Yes — Triangle was originally produced in Japonés and that's the version you'll stream here on CineFlixo. English subtitles are provided when available.
When was Triangle released?
Triangle first aired in 2009.
Do I need an account to watch Triangle on CineFlixo?
No. CineFlixo is free and you can watch Triangle without creating an account. Sign-up is optional — only useful if you want a personal Watchlist or to comment on episodes.
Frequently Asked Questions
Where can I watch Triangle for free?
You can watch Triangle online for free on CineFlixo. All 11 episodes across 1 season are available to stream in HD without a subscription, signup, or paywall. Just open the show page and press play.
How many seasons and episodes does Triangle have?
Triangle currently has 1 season and a total of 11 episodes. The series status is "Ended", so the episode count may grow as new seasons are released. You can browse the full episode list on CineFlixo and continue watching from where you left off.
What is Triangle about?
The series starts with the murder of a 10-year-old girl in 1984. 15 years later, after the case goes unsolved and passes the statute of limitations, a doctor named Goda Ryoji suddenly quits from his hospital and eventually becomes a detective. In 2008, he meets Sachi, a traveling artist in Paris, and shortly after G… It belongs to the Mystery, Drama genres.
In which language is Triangle originally available?
Triangle was originally produced in JA. On CineFlixo the show is available in its original JA audio. Check the player options on the watch page for available subtitle tracks.
When was Triangle first released?
Triangle first premiered on January 6, 2009 (2009). The series has since concluded its run.
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