I Kept Pressing the 100-Million-Year Button and Came Out on Top, Vol. 2 (light novel)

After his power goes out of control for unknown reasons in the Elite Five Holy Festival,
Allen is suspended from school for a month and forced to work as a witchblade along
with Lia and Rose. But as the three make names for themselves outside of Thousand
Blade Academy, they remain unaware that an old enemy from Allen's past is hot on
their heels and out for blood...