Ichioku-Nen Button Wo Renda Shita Ore Wa Kizuitara Saikyo Ni Natteita – Rakudai Kenshi No Gakuin Muso Vol. 5 (Light Novel)

Allen is able to save Senba Academy and return alive after a fierce battle with Fu and Dodriel. However, due to the school grounds being destroyed, it is forced to close for two weeks, and in the meantime, Allen is left with no choice but to take a special class at Shirayuri Girls’ Academy!
Notice: This book is written in Japanese.