Tsubame no Suu

A new student joins Tsubame's class and immediately draws attention for her beauty. Tsubame is shocked, noticing the girl has a bird's head, a detail no one else seems to see. The rest of the class perceives her as a normal, attractive girl due to an illusion she casts. Tsubame is the only one aware of her true appearance. Despite her reluctance, the girl, Suu, seeks her out as the sole person who knows her secret. Their interactions lead to a series of events.