As a character, she's not that great. I guess that's excusable since Kishi admitted he's not good at making heroines. She does have her good moments, as scarce as they may be.
Her design is cute, apart from the few times where she's drawn quite poorly.
Overall, I think she's alright. I just wish Kishi made her emotionally stronger instead of making her seem helpless.
Jokes, she's much better since she got her power-up. She might actually be good looking(as far as a character goes), because of her byakugou seal. We saw it makes her look older. :bouncy: