Kaizo

Not all smells bring back good memories, and the smell of flowers is one  of them. Nature is rare in the grey world Kaizo inhabited, and pretty  things like flowers are reserved for the elite. Which he had contact  with multiple times, unfortunately. They had several escort missions,  and trying to guard whoever important person with the uselessly long  titles while dealing with their complaints was difficult. Officials  complained about everything outside of their comfortable homes and  offices, and Kaizo had the mind to tell them that maybe if they put more of their riches towards something other than  themselves, movement between cities would be easier. But regardless, the  carriage is covered with flowers inside, so that their delicate noses  wouldn't smell the scent of a crowded city. The smell of flora is  overwhelming, even outside the vehicle. And he could barely think when  it was his turn to guard from inside. Perhaps it was because he had  never experienced anything like it, having grown up in the smoke that  the officials are trying to avoid.

Now that he lives near the countryside, away from that miserable dystopia of a nation, wildflowers and trees, actual, large trees,  can be seen, in shades of green and brown and every colour of the  rainbow. The smell of these flowers, nurtured in the plains, is quite  different from the large exotic blooms grown carefully in greenhouses.  And being out here, with wind blowing all kinds of smells everywhere, is  also different from the enclosed space within the vehicle. But  regardless, every now and then in this grassland, he would be struck  with a scent very similar to those military days, and he would be thrown  back into being in that suffocating space with colours and flowers and  an elite who would not stop talking about what a horrible experience  they're having. And his skin would prickle, and the urge to turn his  weapons on the official would increase, and his head hurt...

But  as always, he would be broken from this stupor because an idiot threw a  rock at him, and Kaizo would return to the happy present, yelling and  picking up stones to throw, like he was once again a child in a dumb  quarrel.

------old idea -----------

From the rural areas, moved into city and joined a gang *accidentally*. Very smart though and knew how to please people and pull info out of them, so when he was a teen he'd managed to establish an infomation network and blackmailed the gang leader so he could cut ties with the gang while using them to spy and get more knowledge on gossip.

Kaizo's quick thinking and bold streak lands him into a gang, although it was more like he accidentally-on-purpose joined them. Young yet brilliantly observant and smart, he now finds himself an information gatherer, charming people around him with his intelligence and charm. He can tell what they expect him to be, and so shifts his behaviour to ease his targets and make them more open to slip and thus reveal something they weren't supposed to say.

bold, daring, arrogant, flirty- Charms people's secrets out of them

Conman
Information is my currency
If there's someone you need information on or to cover up info or frame someone etc, he's the one to go to
Maybe is a business man or something and has ^ as a side job?
Song: you're gonna go far kid??
Low tension
Seemingly uncaring of the important things
Unfazed by surprises, seemingly has a plan for everything
On surface: charming, smooth talking, in control, almost respectable

Gang leader! He's smart, but not when it comes to directions. You're better off ditching him if you get lost with him tbh, how he became leader when he can't even leave 2ft from the front door without a guide no one knows