Omamori Himari
おまもりひまり (original)
The slapstick romantic comedy centers around an ordinary 16-year-old high school boy named Yūto Amakawa who is protected by a spirit—specifically, a beautiful, sword-wielding cat girl spirit named Himari. Yūto is descended from a family that has subjugated demons since time immemorial. The charm that once protected him is now impotent, but fortunately, at that same moment, Himari appears before him as his new guardian.
Starring Yuki Matsuoka, Michiko Neya, Ami Koshimizu, Iori Nomizu, Daisuke Hirakawa, Asuka Ōgame, Chiaki Takahashi, Kaoru Mizuhara, Kei Shindo, Mariko Honda
It's a action & adventure and animation show, and has a rating of 6.3 out of 10 from Imdb which is usually fine for this kind of show.
Watch it here
Not found streaming from United Kingdom.