Takanashi Rikka Kai: Chuunibyou demo Koi ga Shitai! Movie Lite

Before Yuuta Togashi tried to bury his embarrassing past and become an ordinary high school student, he proudly lived as the Dark Flame Master. Dramatic poses, invented powers, and an imagination that transformed everyday surroundings into a grand supernatural battlefield were once completely natural to him.

Looking back at those days reveals why Yuuta reacts so strongly whenever Rikka's delusions resemble his own. The memories may make him cringe now, but they also show the enthusiastic boy who existed before he decided that his chunibyou self had to disappear.