Kaijū kyōdai ga Tōkyō o shūgeki shita toki, Reo wa jibun no otōtodearu asutora o ushinatta koto o omoidasu. Shikashi, asutora wa hontōni inaku natte shimatta no ka…?
When monster brothers attack Tokyo, Leo remembers the loss of his own younger brother, Astra. But is Astra truly gone...?
