I want them to get together but it sometimes feel like its just too vulnerable people starved for affection physical and emotional and are just being each other's support.
So she was saying she was like a fish because she had been trying to please her mother for a long time and the final pages are her realizing that she can't be a the "fish" her mother finds beautiful. Koto accepts that she is probably more averse to order and etiquette or rules seen when she eats...