Sing a Bit of Harmony

Set in a near-future, small Japanese town used by the tech company Hoshima as a testbed for AI and robotics, Satomi Amano, Haruka Fukuhara, is a high school student who lives with her mother Mitsuko Amano, Sayaka Ohara, an AI specialist at Hoshima. After a past incident, Satomi is isolated at school, shunned by her classmates, and estranged from her childhood friend Toma Suzaki, Asuka Kudo. Her mother is secretly preparing a secret test of a newly developed AI system designed to be indistinguishable from humans. In this test, the AI is to spend a few days in Satomi’s class in a realistic robotic body as exchange student Shion Ashimori, Tao Tsuchiya. Shortly after being introduced to the class, Shion surprises everyone by recognizing Satomi, asking if she is happy, and breaking into song.

In the days that follow, Shion is bent on making Satomi happy. She helps Satomi find friends, supports these friends with their own problems, and works to repair Satomi’s relationship with Toma Suzaki, Asuka Kudo. Meanwhile, someone mysteriously manipulates the recordings of the school’s security system and Shion’s telemetry results to hide Shion’s unconventional behavior from Hoshima. When the company finally learns of Shion, she is violently taken in and prepared for deletion, and all devices containing footage and memories of Shion are seized.

Satomi, Mitsuko, and her friends decide to rescue her, and break into Hoshima. They are confronted by security, but Satomi and her friends reach the roof of the building, where Toma links Shion to the building’s antenna. Shion uploads herself to a satellite. Encouraged by Shion, who watches over Satomi from orbit, Satomi and Toma reconcile.

Last Updated: October 01, 2025 at 10:24