My idea for the next story is that yn wants to become a demon slayer and she becomes mitsuris tuchiguro or student then she experiences flexibility training . Mitsuri makes yn do a split in air and she is only holding by 2 logs which she is standing . Yn learns by mitsuri how to cook and fight . After half a year or year she almost becomes as strong as mitsuri. Mitsuri after making yn fight a demon she finally lets yn do to the demon slayer test and she be friends tanjiro and zeitsu and then she kills many demons and survives then they go on separate ways and mitsuri holds a feast for her and later she learns love breathing style and creates her own breathing style .