Fate/stay night
It’s up to a young orphaned boy to take on deadly magicians in a quest to gain control of the ultimate power source: the Holy Grail.
Starring Noriaki Sugiyama, Kana Ueda, Ayako Kawasumi, Hiroshi Kamiya
It's a animation and action & adventure show, and has a rating of 7.3 out of 10 from Imdb which is usually fine for this kind of show.
Watch it here
Not found streaming from United Kingdom.