Protected

" 𝓐𝓷𝓭 𝓘 𝓼𝔀𝓮𝓪𝓻 𝓽𝓸 𝔂𝓸𝓾, 𝓽𝓱𝓪𝓽 𝓘 𝔀𝓲𝓵𝓵 𝓹𝓻𝓸𝓽𝓮𝓬𝓽 𝔂𝓸𝓾 𝓔𝓶𝓫𝓮𝓻𝓵𝔂𝓷 𝓛𝓮𝓷𝓷𝓸𝔁. "

Emberlyn Lennox has been protected her whole life, as being the daughter of the leader of the Nesryn Gang. Her life is valuable to her father's rival gang, Lumency of London. After one of her bodyguards gets shot and taken to be tortured, she is immediately whisked away and surrounded by a whole new set of protectors.
Diego Ash has the best headshot record and we aren't talking about video games here. Diego is known to be ruthless, cold, and a key factor, alone. Diego not having a family, wife, or kids allows him to go all in. If he dies protecting or doing an order from his boss, he wouldn't care. That's why Emberlyns father has asked Diego to protect his most prized possession, Emberlyn Lennox.