Sing a Bit of Harmony

Satomi is content with her solitary life until a new student named Shion, who is actually an AI, joins her class. Shion tries to connect with Satomi through singing and promises to bring her happiness. Although Shion's performances and princess-like outfits make it clear she isn't human, her playful behavior helps Satomi bond with four other classmates. Together, they create meaningful memories, but they also face the reality that even the most valuable moments can be lost or forgotten.