The film released earlier this year in Japan in October. Funimation, who has the English distribution rights for the film is planning on a theatrical release in early 2022.
You can find the official trailer below.
A summary of the film from Funimation can be found below.
When the beautiful and mysterious Shion (Tao Tsuchiya) transfers to Keibu High School, she quickly becomes popular for her open-hearted personality and exceptional athletic talent… but she turns out to be an AI in the testing phase!
Shion’s goal is to bring chronic loner Satomi (Haruka Fukuhara) “happiness.” But her strategy is something no human would expect: she serenades Satomi in the middle of the classroom.
After finding out that Shion is an AI, Satomi and her childhood friend, engineering geek Toma (Asuka Kudo), steadily warm up to the new student. Along with the popular and attractive Gotchan (Kazuyuki Okitsu), the strong-willed Aya (Mikako Komatsu), and judo club member “Thunder” (Satoshi Hino), they become more and more moved by Shion’s singing voice and earnestness even as her antics bewilder them. But what Shion does for Satomi’s sake ends up involving them all in some serious pandemonium…
Get ready for the heartwarming story of a not quite market-ready AI and her classmates!
Sing a Bit of Harmony will be available in select theaters in United States, Canada, United Kingdom, Ireland, Australia, and New Zealand early next year.