Just a normal girl who live so oh ordinary life and someone who rather a dangerous man came to her life and their path crossed together

A mysterious man who found her at just some random rooftop, so coincidentaly random girl, who happend to be the one

What happend to them both if they relized that they fell in love with each other?

What would happend if fate playing games with their life?

And they swore to their life to protect each other and would do anything for it...