my underestimated love ANGEL VS. DEMONS

its manly about this girl named yurika she is a demonic guardian angel she has to destroy all of demons in the world.her parents passed away when she was a little baby and to protect her she had to stay and live with humans.there was another demonic angel but she had to find him/her .so when they unite they destroy all evil demons,but something happens to yurika when she meets the other guardian angel she couldn't do it because……….she fell in love.when it got harder and the demons were destroying the world later she learns that it would be the right thing to do,and that she had to do it …………….but does she?!