Fairy Tail Dream is an animanga noncanon FT site with a post-apocalyptic twist. It's an open universe, meaning that you are not limited to the scope of the canon universe, and able to create whatever characters with whatever abilities you wish with a fair DnD-inspired stat-based magic system.
Kiyomi, being the person she is, isn't likely to build many genuine friendships. She'd cold, calculated and doesn't tolerate distractions for long. She's on a mission to rule this realm and the hell which birthed her and is difficult to get along with when showing her true colors. Aside from the sarcastic comments and blunt truth you may endure, the demoness is patient with others of use to her. With a job as both a guild mage and an assassin, she is sure to have plenty of connects.
Apart from that she's been known to love violence, so bonding over bloodshed could soften her exterior. Despite that regal aura she gives off she's far beyond what you see when you look at her, a living epitome of "don't judge a book by it's cover". Whether it be getting drunk at a bar, missions, or even guild work; Kiyomi's guard can be moved slightly!
Blah, who cares about concepts like love! If anything she would much rather have a flirtatious relationship where both parties are aware that it likely won't be going anywhere serious. Kiyomi is far too busy juggling her various duties to entertain anything 'real' but friends with benefits, drunken one night stands, or even just flirting/ showing interest are the most likely scenarios for now.
Being a demon, member of Quatro Cerberus, and a mage are all very likely to lead to enemies in the mortal and supernatural plane. While it isn't public knowledge that she is a demon, if one were capable of seeing through the veil to witness her true form It could complicate things. Not many people WANT to encounter a demon, clearly, and some would even dare to attempt slaying her to their own demise.