Kagaku-sha-tachi ga burakkusutā no chōsa o kaishi shi, burakku shirei-kan wa karera o tomeru tame ni asashin o okurikomu. Ippō, Tōru wa nazo no shōjo to tomodachi ni naru.
Scientists start investigating Black Star, and Commander Black brings in an assassin to stop them. Meanwhile, Tooru befriends a mysterious girl.
