Adapted from Kabei Yukako's novel of the same name. After being guided by a mysterious message from the past on a cellphone's answering machine, Umi encounters Mahiro, a delinquent at her school. They gradually come closer, but more messages appearing on the answering machine will unveil past secrets...

• Ark Entertainment
• Mio Yuki
• Yuki Inoue
• Atsuhiro Inukai
• Sakurako Konishi
• Aina Yamada
• Kiita Komagine
• Tasuku Nagaoka
• Yuki Sakurai