Triangle Heart: Sweet Songs Forever

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Alternative Titles

Japanese: とらいあんぐるハート -Sweet Songs Forever-


Type: OVA
Episodes: 4
Status: Finished Airing
Aired: Jul 24, 2003 to Dec 26, 2003
Producers: Discovery
Licensors: None found, add some
Studios: Seven Arcs
Source: Visual novel
Genres: AdventureAdventure, RomanceRomance
Duration: 28 min. per ep.
Rating: R - 17+ (violence & profanity)


Score: 6.121 (scored by 25652,565 users)
1 indicates a weighted score.
Ranked: #84022
2 based on the top anime page. Please note that 'Not yet aired' and 'R18+' titles are excluded.
Popularity: #6613
Members: 6,556
Favorites: 7

External Links

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Fiasse is a world-renowned singer. She is now the headmistress of a special Singing School who does a Charity World Tour every year. Her mother left behind a inheritance for her after she died and some shady people are after Fiasse and the inheritance. Bring in Ellis, and two siblings who are master of the swords to protect Fiasse. The World Tour is coming up and Fiasse will continue the show. Ellis, Kyoya, Miyuki and company must protect their childhood friend at all costs.

(Source: ANN)


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Related Anime

Characters & Voice Actors


Shinbou, Akiyuki
Nakamura, Kenji
Episode Director
Kusakawa, Keizou
Episode Director
Oonuma, Shin


Opening Theme

Apple Music
Amazon Music
Youtube Music
"Trust You're Truth ~Ashita wo Mamoru no Yakusoku~ (Trust You're Truth ~明日を守る約束~)" by KOTOKO (eps 2-3)

Ending Theme

1: "inside of a wilderness" by KOTOKO (eps 1-3)
2: "Sweet Songs ever with you" by KOTOKO (eps 4)

Mar 9, 2009
Skadi (All reviews)
What originally attracted me to Triangle Heart was its relation to Magic Girl Nanoha. I was a big fan of Nanoha so I was looking forward to viewing this. I thought at first that this was just a spinoff staring the older brother and sister but I realized later that this series came first. Unfortunately it just didn’t live up to successor.

The main problem with Triangle Heart is that it is a series that doesn’t know what it wants to be. Is it a shounen style action series? Is it romance? A musical drama? Because it tries to read more
Sep 30, 2007
jet2r0cks (All reviews)
5 WORDS OR LESS REVIEW : Just watch the Nanoha series.

Triangle Heart is another one of those series that could have been better. It definitely had some potential, but it wasn’t executed well.

I gave it a chance – I really did, but for the first two episodes felt like a chore to me. The last two got a bit better, and I realized it got better because the plot was more defined by then. I guess that’s it – the plot development was really slow, and since it was a 4 episode OVA (with limited time) I thought they should have defined the plot sooner.

I read more
Dec 10, 2007
ShadowCasper (All reviews)
Triangle Heart -Sweet Songs Forever, could have been made into a much longer series, but for the 4 episodes it was packed into, it was done very well.

The story, or plotline, was quite slow for such a short anime. But unlike other < 6 episode animes that I have seen, this one did not throw all of the plot into the last two Episodes. It slowly leaks out the plot. From the beginning to the end, you learn much more about the Characters. However, the story, being such slowly done in such short time, has a downfall; it was very simple. Good guy versus Bad read more
Jun 29, 2016
ktulu007 (All reviews)
I've reviewed a lot of the Nanoha franchise. The first series, A's, StrikerS, Vivid and I'm sure I'll review the follow up to Vivid when it comes out. Why am I talking about Nanoha? Well, today's offering, Triangle Heart Sweet Songs Forever, is kind of a prequel but not really. The basic gist of it is that this series started as a series of eroges and OVAs called Triangle Heart. Nanoha's character was introduced as the younger sister of two of the main characters in the third instalment, and the one this OVA was adapted from. It was also the last hurrah of the series, read more


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Recent Forum Discussion

About the prequel
animan7 - Nov 24, 2011
2 replies by Salokannel2 »»
Oct 6, 2016 8:32 PM
Poll: Triangle Heart: Sweet Songs Forever Episode 4 Discussion
gohdan - May 31, 2011
3 replies by RafaelDeJongh »»
May 7, 2014 7:04 PM