”chunibyo” refers to the age that middle schoolers start watching anime and imagine that they have secret magic ninja sword powershttps://en.m.wikipedia.org/wiki/Ch%C5%ABniby%C5%8D …
the ego formed reflects the narrative explainer in an anime fight as each individual explains their secret move and how it was all part of the plan but then the other guy reveals that the planning for that plan was part of the plan all along including explaining the plan