A story where a certain hashira who wears a mismatched haori saved a girl from a snowy mountain, and unexpectedly became his Tsuguko. And to everyone's surprise, the girl wasn't just a normal girl, but someone who's capable of helping everyone on their goal in the future. Demon Slayer and the characters are not mine, but Gotouge's. Except for F/N and other extra characters. *COMPLETED*