A teenager who was once convinced that they were the Dark Flame Master and became isolated because of it. They tried to forget about their previous beliefs by attending a different high school with none of their former classmates from junior high. However, meeting Rikka caused their past delusions to resurface.
As the story goes on, Rikka and Yuuta fall in love eventually creating a "lovers contract" between them, a chuunibyou term they came up with in an attempt to avoid being in a normal relationship..