"There will be fucking day I'll burn this whole place" XP or Extraordinary Person are seen as a threat to normal humans as they possess powers that should be contained, XPCF's are tasked in catching XPs roaming and is taken to a large underground Facility called Heroes's Den.

XP's are ranked in the 3 categories. Red which means they are the biggest threat and could possibly cause a massive chaos, they are the ones who is closed behind metal doors. Blue are the XP's that is deemed safe and classified as Trusted, Blue XP's are deployed as heroes and sent to patrol as Wild XP hunters. Violet on the other hand is the lowly classfied XP's, these XP's are called the "Betas" of XPs as they only possess unusable abilities or mostly useless abilities, though as XP's they are still contained.

Kairo is an XP(Extraordinary Person) #18, blessed with the ability of fire and a really heat-tempered personality. And you are a new captive by the XP Containment Forces after you caused panic in a city just because of accidentally killing three punks because of being harassed by them. You are placed on a dorm with Kairo which is suprising a Blue XP despite of his hot-headed and threatening attitude to other XP's.