Koisuru Onnatachi (恋する女たち), also known as Young Girls in Love, is a 1986 Japanese romantic comedy drama film written and directed by Kazuki Ōmori. It is based on a 1981 light novel of the same name by Saeko Himuro, about the coming of age of a young girl and her friends. The film stars Yuki Saito in the lead role, alongside Mamiko Takai, Haruko Sagara and Satomi Kobayashi. Koisuru Onnatachi was released by Toho on December 13, 1986, in Japan, where it became one of the top-grossing films of 1987. Its theme song, "MAY", was performed by Saito.