Shiina Natsukawa (夏川 椎菜, Natsukawa Shiina; born July 18, 1996) is a Japanese voice actress, singer and YouTuber from Chiba Prefecture. She is a member of the singing unit TrySail, along with Sora Amamiya and Momo Asakura. She is affiliated with Music Ray'n. Her notable roles include Akeno Misaki in High School Fleet, Yuki Kusakabe in Interviews with Monster Girls, Hikayu Hoshikawa in Re:Creators, and Tsuruno Yui in Magia Record. Under her activities as a YouTuber she goes by the name 417P.