Seiji Matsuoka (松岡 星児, Matsuoka Seiji) is a student of Higashi High School and an acquaintance of Kaoru Nishimi and Sentarou Kawabuchi. Trivia Edit The name Seiji means "star" (星) (sei) and "chlld" (児) (ji). Seiji's surname Matsuoka means "pine tree, fir tree" (松) (matsu) and "ridge, hill" (岡) (oka). This article is a stub. You can help Kids on the Slope Wiki by expanding it. Retrieved from "https://sakamichinoapollon.fandom.com/wiki/Seiji_Matsuoka?oldid=4966" Categories: Article stubs Characters Male Characters Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.