Osome (オソメ, Osome)
She was first seen shouting at the people in the marketplace for taking Arata's unfamiliar items. She then had a conversation with Arata about Tsutsuga giving him information about the Shou. After they finish their conversation,she handed the map to him to order to find Kotoha throughout the prison island. After Arata left, one of the market people question Osome what her reason for giving a map to him. She replied that She and Arata shares lots in common between them.
Later, Osome was surprised to see that Arata was alive,plus he found the girl he was looking for. When Arata told Osome that he need to find Tsutsuga, she was upset by his word. She fears that people's life will be taken. She then watched the battle between Arata and Tsutsuga. After Gatoya came back to normal, she was overjoyed seeing Masahi her close person is still alive that he is taken during the hour of reckoning. Osome and Masahi leave Gatoya and she is not seen again.