The overview seems fine to me (and I'm a native English speaker). Why do you think its in broken English? As for the runtime, it is correct as it is now. Runtime in the tv section refers to the duration of one episode, not the series as a whole.

It looks like someone has fixed the double spaces that were there, which was the main thing I noticed. The character's name is "Yuu", not "Yu" and there is a general lack of punctuation. Maybe broken English was overly harsh, but more to the point it's not especially comprehensive. My bad on the runtime though, I'm unsure how this site works and formats things so forgive me.

I fixed the character's name and added in some punctuation in. Its quite alright, and welcome to TMDB! If you ever have any questions about editing the different fields of the database, you can check out our contribution bible, which the staff wrote as a way to put our rules and guidelines in one place that anyone can view. If you're more interested in working with the tv section of our database, I definitely suggest you check out the tv section of the guidelines.

Thanks for the report and again, welcome to TMDB!