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Identity: It's a fanmade MSA anime and manhwa.
Background: In the Taisho era, in 1902, when this man, Ayato, whose his wife, Sumika gave birth to Asahi at the age of 17 or 18, she was in an abusive relationship with him, as well as with her mother-in-law who bullied her on a daily basis. One day, during one of his outbursts, she bit his hand, grabbed Inosuke then ran away from the abusive household, fleeing barefoot through the snow. Since she didn't have parents or any siblings to go to, she was running ahead until she reached the Paradise Faith cult, taking shelter as one of the worshippers of Doma - a leader of the cult. Ayato and his mother chased her there but were soon killed by Doma, who found them to be too noisy, abandoning their corpses in the mountains. What happens next?