Ep. 1: Mamoru Akasaka dan Asisten Menyelidiki Bencana Hinamizawa bersama Petugas Oishi dan Rena

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Mamoru Akasaka, with an assistant, visits the abandoned town of Hinamizawa in the year 2007, and meets with Officer Oishi. They still wonder about the Great Hinamizawa Disaster that decimated the town and the connection to Miyo Takano's File No. 34. Rena, now in her thirties, survived the disaster because she was detained at the police station during the incident. She shares with them the little knowledge she has about Rika's strange behavior shortly before the supposed 'gas leak'. Akasaka recalls his meeting with the young Rika. The episode is a direct epilogue of Tsumihoroboshi-hen. (Source: Wikipedia)