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One day, Kayoko, who lives near the Tama River, picked up a strange bottle in a park along the river. She might have come down the river. Her interest was piqued, and she pulled out a piece of paper inside, where she wrote, "Please contact me, who is living a lonely life underground." She asked me to put the replies in this jar and keep them in the same place. Kayoko thinks she's playing a prank, but just for fun she takes the bottle back to her house, where she writes a simple reply and she returns it to the same spot in the park the next day.
as Kayoko Suwa
as Hisaku Suwa
as Aki Takatori
as Yasuko Tsurumaki
as Takayuki Tsurumaki
as Chiaki Shisui