The protagonist of this book is a teenage boy. If my memory serves, the cover might have featured a phoenix in a ring, but that's just what I seem to remember. The story is set in a world that is basically the same as ours—contemporary times, social media, big cities, etc. But the main difference between our two worlds is that in the story, there are a number of people who possess powers. Some people are born with powers, and others are not. The world has a love-hate relationship with these people; some people adore and even hero-worship them, while many others hate or fear them. There is a government agency that uses various magical devices to control and oppress those with powers.
The protagonist is a teenage boy; he was adopted and lives with his adopted parents and brother in a large city. His brother is a fanatic, obsessed with those born with powers. The protagonist, who is gay, comes to work at a museum dedicated to phoenixes. One day, he discovers that he has powers—something none of his family or he had known (again, if my memory serves). His particular powers involve the use of fire. As he comes to discover his new identity, he and his family become entangled in the dangerous world of powers. He gets captured once, then escapes, and finds refuge with a group of people who like him possess powers.
Could someone tell me what this is?