Fell In love with the ceo

Kakashi Hatake is the new ceo for (name of company).
The company's old ceo was just an fill in for Kakashi's father that had passed from a shooting, The White Fang (mafia vibes tho ?), who is also Kakashi's best friend, (oc or Asuma?), Now that Kakashi is old enough, (age), he will be taking over (name of company) as ceo in the shadow of his father. Now that he can be ceo, he can go out and live on his own, right? Knowing his father was filthy rich, Kakashi inherited all the money since he was an only child. He can basically do whatever he wants-except escape the woman of his dreams. Y/N L/N is new in town, and needs a place to work. Her (their?) grandmother (oc or Tsunade?) and White Fang were close friends, and she couldn't just pass up the opportunity. (name of grandmother) magically worked y/n into (name of company). Plus, she's assistant for ceo. Not only that, but she's also next door penthouse neighbors with none other than- Kakashi Hatake. The man she (they?) works for. Seems like destiny and fate had a child named "meant to be," if you ask me. Will they get along? How will their relationship hold up?
Enemies? Mutuals? Co-workers? Friends? Best Friends?
Maybe boyfriend and girlfriend? Perhaps Fiances? Or, even better- husband and wife?