The Third Heart is a music video anime, produced by Studio Gohan.

About the production: the story comes from an original script, there is 1 episode of about 4 minutes and its current status is "finished".

Its main genres are psychological, with themes such as School, Female Protagonist and Vocal Synth.

On AniList, The Third Heart has an average score of 61%, an average score, and appears on 567 users' lists.

The franchise continues in or follows from: Hotaru wa Inakatta.

Music video for the song Daisan no Shinzou, directed, animated, and musically written by Harumaki Gohan, featuring vocals by Hatsune Miku. Note: There exists two versions of this song; the first being a vocaloid version featuring Hatsune Miku uploaded on May 15, 2021 and a self-cover version by Harumaki Gohan, which was uploaded later on May 23, 2021.

Official synopsis from AniList.