I Kept Pressing The 100-Million-Year Button And Came Out On Top, Vol. 2 (manga)

Allen has finally entered the school of his dreams-Thousand Blade Academy. But the peaceful student life he'd wanted is nowhere to be found, and instead...he's living with a princess and his classmates hate him?! On top of that, the Elite Five Holy Festival, held to determine the strongest first year of the Elite Five Academies, is about to begin...!