Estudante do primeiro ano de ciências estatísticas em uma universidade em Yokohama. Ele é um cara raro que não tem um smartphone nos dias de hoje.

A young female doctor with a 6-year-old daughter is on a night flight caught in a terrible storm. In a half-empty cabin, she faces unexplained deaths of her fellow passengers, loses her grip on reality and relives the worst nightmare from her childhood.

This is a world of the skies, where many islands drift in the sky. A boy named Gran and a speaking winged lizard named Vyrn lived in Zinkenstill. One day, they come across a girl named Lyria.. Gran and Lyria, in order to escape from the Erste Empire, head out into the vast skies, holding the letter Gran's father left behind - which said, "I will be waiting at Estalucia, Island of the Astrals".