A thing that falls from the sky

The story takes place in the peaceful and tranquil Sora Mi Town, where the ordinary boy Sakurai Tomoki (voiced by Hoshi Soichiro) lives alone. Every night, Zhi Shu would dream of angels descending from the sky. Although he was troubled by the dream, Zhi Shu's every day could still be called calm. One day, an unknown creature named Icarus (voiced by Saori Hayami) landed next to Tomoki. She had a cute face but huge wings on her back. Has everything in the dream become reality? The kind-hearted Zhishu took Icarus in, and his gentleness and sincerity moved this supposedly ruthless angel. After that, the two angels Nimfu (voiced by Iori Nomizu) and Astraea (voiced by Kaori Fukuhara) were also influenced by Tomoki and stayed by his side. Where did these angels come from? Why come? Behind them, there seem to be many unknown secrets hidden.