There is an island in the sky, and not everyone can see it. A harmless village boy living in the rural lands, Iolani Tori is afraid of heights and loud noises. Taken by surprise when he receives a mysterious letter addressed to him, Io finds out that the floating island wasn't a figment of his imagination after all. A talking sparrow; An eagle's eye, A waiting vulture And a silent night.

Just some genderfluid/LGBTQ+ problems, I guess...