[GEKI-030] If a flexible synchronized swimmer can maintain a flexible pose until the end wle having sex, they will receive a prize of 1 million yen! They will be stimulated with an electric massager and a big penis in a situation where they cannot move, and will be continuously teased without stopping even after orgasm, experiencing their first continuous climax in life!! Hikari-san (21 years old), an active athlete with experience in national competitions and big breasts.