In Between Your Lies "You Are Mine"

Crystalina Nieves has a secret that she needs to keep. She was raised in a family of werewolves but shockingly when she was awakened. She has nine tails! Her pack considered her omnimous, so they vanished her right away after being awakened. She ran away to escape to a great extend that she ended up in a city.

She wanted to live a peaceful life and blend in with society while finding an answer to her gift. Until the day, she decided to apply as a secretary for a job opening at a widely known marketing company called AURORA. Where she first met Dariston Mendoza, the CEO of the company. Dariston also has a secret that no one should ever know. Then one day, Crystalina accidentally discovered Dariston's proper form after being saved in an unexpected event. In some turn of events, Dariston got attached to her and became possessive until he discovered she was hiding a secret as well.

What kind of relationship would they show when they discovered each other impurities?