The Ability User of Modern Day

In the modern world where people work and magic and abilities are seen as nothing more than fairytails and fiction which are commonly displayed in Anime and Manga. A normal high school boy has had abilities since he remembers and has used these abilities throughout his life for his own benefit rather than becoming some hero. Rather than displaying these abilities to the world and becoming some sort of hero our main protagonist Kazuki who is seemingly carefree and lazy but behind that a superstrong ability user decides to hide these abilties and train them alone and keeping them a secret from those closest to him. We will see our protagonists life change from having an ordinary high school life to meeting new people, experiencing new things and even reuniting with people from his past.