Thanks to Taguchi renewing their mission, Ichiro and Shiro continue their pursuit of Green Seed and the mastermind behind the happenings at Shindo Chemical. A chilling encounter with Satoru Yamada makes infiltrating the Shindo R&D department a top priority, and Shiro gears up for an undercover operation with Ichiro and Masaki's support. His adept sleuthing brings him face-to-face with Green Seed's creator, Haruki Kujo--but it appears someone else has also set their sights on the scientist...