Triangle Heart: Sweet Songs Forever is a oVA anime that premiered in summer 2003.

About the production: the story comes from a visual novel, there are 4 episodes of about 30 minutes and its current status is "finished".

Its main genres are adventure and romance, with themes such as Guns, Swordplay and Foreign.

On AniList, Triangle Heart: Sweet Songs Forever has an average score of 55%, an average score, and appears on 2,173 users' lists.

The franchise continues in or follows from: Triangle Heart: Sazanami Joshi Ryo.

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: Anime News Network)

Official synopsis from AniList.