Wakasu (若洲) also Wakasu Island, is an island located in Koto, Tokyo. It is located south of Shin-Kiba and is connected to a new unnamed island to the south by the Tokyo Gate Bridge.
The place was known connected with the murder of Junko Furuta, a high school student whose body was found there dumped in barrel and completely concreted after six teenage boys, led by Hiroshi Miyano (including Tetsuo Nakamura and Koichi Ihara), killed her at their house in Ayase, Adachi, owned by Shinji Minato's family, in 1989.