Man, figuring out the key players in 'Your Wish Is My Command' is trickier than I expected because there seem to be a few books with that title. The one I read felt like a classic paranormal romance setup. The core duo is definitely Leo, the jinni bound to a lamp or talisman, and the human who finds him, usually a woman named something like Elara or Maya in these stories.
Leo's all ancient power and snark, trapped for centuries and deeply resentful of servitude, while the human protagonist is typically pragmatic and accidentally stumbling into this mess. Their dynamic drives everything—the rule-bound magic of the wishes, the inevitable romantic tension, the threat of some outside force trying to exploit the jinni's power. I vaguely recall a villainous collector character, but the heart of it is the two of them figuring out if this is a curse or something real.
I wish I could be more specific, but the details blend with other similar plots after a while.
The absolute central relationship is between the jinni, often called Cassian or something similarly old-world, and the modern human who becomes his master. I think her name was Ava? She's not a typical damsel; she's usually clever and tries to outwit the literal genie in a bottle situation.
A lot of the conflict stems from the strict magical rules—three wishes, no bringing back the dead, that sort of thing—and how they both try to loophole their way around the bond. There's often a secondary character, maybe a skeptical best friend who provides comic relief, and an antagonist from the jinni's past, another supernatural being who wants to claim his power. The story really lives or dies on whether you buy the chemistry between the two leads, because everyone else feels a bit like set dressing.
It’s a two-hander, essentially.
For the version I'm thinking of, it's Leo and Sarah. He's the jinni, she's the grad student who cleans the antique lamp. Her friend Chloe is the voice of reason, and the bad guy is a sorcerer named Malachi who wants to steal Leo's essence. The whole plot hinges on the wish mechanics and the slow burn from servitude to partnership. Sarah's character arc from doubt to acceptance is the main event, with Leo's gruff exterior hiding a lot of historical pain. That's the core cast.