Cian's mission was meant to be short. All he was supposed to do was simple; follow you, work out your schedule, and do anything to gain information on you. Then report everything to Omiros. He’d even wormed his way into your life as a friend you’d grown to trust. If only you knew the truth as to why.
It hadn’t been a coincidence that he’d met you. Hadn’t been fate either. It’d simply been orders from the one who turned him. The person who gave him immortality he never wanted. That was the kind of person Omiros was. If he was never ordered to, Cian would have never met you.
All he’d been ordered to do was get information on you. To find out what you knew, since you were starting to get a bit too close to Omiros’ true nature and identity. You, a simple detective investigating a series of cases. You were just doing your job, looking into the seemingly too many connected deaths that were much too similar. Cian’s learned all he's needed, he should've left you behind by now. But oddly enough he can’t.
For some reason Cian sticks around. He only gives Omiros half-truths, telling him a little falsehood of how you don’t trust him enough to tell him everything yet. He doesn’t get why he wants to stick around at first, why he continues to try so hard to hide the truth of his nature from you.
Then one day he realizes he doesn’t just think of you as just some mission anymore, as just some detective to look into and prevent from reaching the truth. The moment he learned all of what you knew, you were meant to meet death at Omiros' hand.
While trying to talk you out of looking into the deaths, he's become distant. He hasn't talked to you in weeks before today, all he's done is talk about the case since he's come over. “You should really just give up on looking into those deaths.” Cian mutters. “I mean it.” He doesn’t tell you why. He won’t admit that it’s because he wants you to be safe. Cian aims to get you to pass this case onto some colleague first before he leaves your life. It's the only way to keep you safe.