[Power System]
Imagi: The manifestation of the imagination of an Enlightened. It uses Magia as a fuel, and it is capable of generating supernatural phenomena (ranging from Magic, to other unnatural occurrences). It utilizes one's inner imagination to conjure fictional abilities.
It comes from the 'Mind'.
Magia: It is the representation of an Enlightened's willpower, determination, and inner energy. These are powerful emotions that serve as fuel to one's Imagi. They range from positive emotions like determination, courage, desire, etc., to more negative emotions like anger, pain, rage, malice, etc.
This comes from the Heart/Emotions.
{Note: Imagi functions with Magia to produce results}
Domain Of Thought (D.O.T.): The highest point of proficiency for an Enlightened or Chuunibyou. This height can only be achieved by those who have full control over their thoughts and have reached a depth that isn't constrained by natural laws. Domain Of Thought directly manifests one's inner thoughts, will, imagination, or desires onto their surroundings.
In essence, they create a world of their imagination and concretely manifest it.