Hey can anyone tell me the name of the light novel this is what I can remember of it

child wakes up with previous lifes memories in a gutter tries to steal old clothes old man gave some to the child. child leaves town to clean up makes a trap to catch fish to sell builds house takes in orphan girl as little sister saves money rents house in town From old couple moving in with their daughters family becomes a hidden well keeper makes ice cream and sells can breath underwater same with little sister large clam in well friend from a fire tribe but gets sick in heat uncle runs ice house goes to beach and dries salt water for salt makes soy sauce and miso.

please help me I was reading the story a while ago and I somehow lost it and haven’t been able to find it since please I want to finish it. Thank you!!!