E1
Episode 1
Where to watch
Not streaming yet
Coming soon
No streaming availability found for Triangle Heart anywhere yet.
Seasons & Episodes
E2
Episode 2
E3
Episode 3
E4
Episode 4
Cast · Directed by Akiyuki Shinbo
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Triangle Heart — streaming FAQ
Which OTT platform streams Triangle Heart?
Triangle Heart isn't streaming anywhere in United States yet.
Is Triangle Heart on Netflix?
No, Triangle Heart is not on Netflix in United States as of August 2026.
Is Triangle Heart on Amazon Prime Video?
No, Triangle Heart isn't on Amazon Prime Video in United States right now.
Where can I watch Triangle Heart for free?
Triangle Heart isn't streaming in United States yet, so there's no way to watch it free at the moment.
How many seasons are in Triangle Heart?
Triangle Heart has 2 seasons in total (9 episodes). The series concluded in 2003.
Are all episodes of Triangle Heart out yet?
Yes — all 9 episodes across 2 seasons of Triangle Heart are out and available to stream.
Is there a Season 3 of Triangle Heart?
No — Triangle Heart ended after 2 seasons, so there is no Season 3.