that novel has no translation yet and i only came across with it when i was reading fast wear novels. it isn't completed yet and it is very slow in updating. i bookmarked it in my old phone but now i have a new phone and i forgot the link. story: F!MC has no previous memory and cannot reincarnate because her soul is incomplete. She has to become a system of her host M!MC and travel several worlds to search for the parts of her soul. She can only become human in a certain world if that world has her soul shard or if the wisher is female, hence she's the one that is needed to do the task. otherwise, she becomes animal pet of host. hope someone has read it before. the novel rarely appears in suggestion bar in 69shu so it is really hard for me to find it again.
i've found it! here's the link if you're interested: https://www.69shu.com/txt/28555.htm title: 神级快穿：病娇宿主，求轻宠 (God level fast wear: sick and host, seeking light pet)