Harry Styles Fanfiction Recommendation

Farfalla

When intel is found that Mia Frost had a target put on her back by her father's old enemy, her life is put into the hands of a highly trained assassin.

Working for the British Intelligence, Harry is a highly trained killer. Knowing when and how to execute a plan with complete perfection he is the ultimate weapon. Being the best at what he does, can he keep Mia safe from the entire world or will his and everyone else around him crumble?