Izuku Midoriya was called a genius, able to learn any new skill, language, or gain and master a new quirk all in the span of a few hours or even days.
To not lose his sense of self, His mind creates aspects to hold and channel new information, skills, quirks, etc.
when he's walking home, taking a walk, or even doing something as simple as grocery shopping. he's joined by a group of imaginary experts/friends who are willing to give their help or quirks to assist Izuku with any problems he may face.
In a world where powers are known as quirks lies a being who was just a myth with power above all what if that power was bestowed upon a young man who's been nothing but a scapegoat yet has a heart of gold to those he respects while showing the wrong he's not to be mess with