Kasahara Masaki is a Japanese mangaka from Saitama Prefecture. He debuted in 2011 with Shokukyō Tankentai: Hello Works, published in Weekly Young Jump magazine (Shūeisha). The same magazine begins in 2013 the publication of his series Gunjō Senki (群青 戦 記).
Before his debut, Kasahara Masaki worked as an assistant for mangakas such as Hara Yasuhisa (Kingdom, キ ン グ ダ ム) and Tachibana Kenichi (Terra Formars, テラフォーマーズ).
