[3] Kowarekake no Orgel begins in medias res with a look at the two main characters, Keiichirō and Flower, sitting in a van in the rain.

It then flashes back to the beginning, showing Keiichirō taking shelter from the rain near a trash heap next to which a small girl is sitting in a chair with a sunflower, unconscious.

Although Kowarekake no Orgel was self-published, it featured a somewhat notable production cast: it was directed by Keiichiro Kawaguchi, who was also involved in the production of Great Teacher Onizuka and Hayate the Combat Butler, and featured voice acting by professional voice actors Tetsuya Kakihara (Keiichirō) and Masumi Asano (Flower).

The OVA also featured a screenplay by Shinichi Inotsume and original character design by POP, which was adapted by Kōhaka Nishio.

The main ending theme, "Kowarekake no Orgel" (こわれかけのオルゴール, sharing the title of the OVA), as well as the image song "Keiichirō no Omoi" (敬一郎の思い) are performed by Japanese singer-songwriter Hiromi Satō, and composed by Tsukasa (of Sound Online).