Y/n a 16 year old girl who has been a demon slayer ever since age five, uses B/s(breathing style) and is a very strong Demon slayer, but she has her weakness, now you might be thinking what is her weakness, well her weakness is none other than Zenitsu agatsuma, yep him yes I know it sounds weird but to her..he is her every thing. Zenitsu however had just met y/n and they both loved each other deeply but just didn't know how to say it..