The core word of this story is search. As for what to look for, the answer was unclear at first. Only when the protagonist of the story is found, perhaps bystanders can guess something.
I find that my heroines are always similar. They never become the most lovable ones in my writing. Maybe this is also my positioning of the word "self", which is so bitter.
But in any case, this story has nothing to do with bitterness. Bitter branches can always produce sweet and sour fruits and sweet flowers.