The Hashira who is afraid to kill demons

basically the title
A girl name Za'Kari is the unseen hashira since she went into hiding when she was pregnant she meets Tanjiro who now wears the sun hashira Yoriichi hanafuda. Once seeing them she realized that she cannot stay in hiding but she also realized she has to kill again she also go by the name the the demon within the demon corps for she killed as many demons than other hashiras in any era.