Short and somewhat beautiful but... I'm not sure if logical building of foundation to the character's senses of motivation would help; in how oddly and to me unrealistically mature she and the boy is for their age but even so... it's too unrealistic which makes it flawed to me. So, I guess... it arguably deserves a 5 but I'll give it a 4/10. It's ok.
Funny, I forgot and thought this was the original source only to later realize that this is based off the japanese film.
I might skim through it or at least search her song to hear if it's good, along with the american version.