This article is about a/an ally in Tokkyuu Shirei Solbrain. Seiichi Nakai (中井誠一, Nakai Seiichi?) - It has long been a friend of Yukio Sato. After his death, was threatened of death by the villain himself. Retrieved from "https://metalheroes.fandom.com/wiki/Seiichi_Nakai?oldid=51352" Categories: Tokkyuu Shirei Solbrain Allies Villain Good turns Evil Evil turns good Community content is available under CC-BY-SA unless otherwise noted.