The Magic in this Other World is Too Far Behind! (Manga) Volume 9 oleh Gamei Hitsuji

Suimei’s ongoing—and increasingly dangerous—showdown with Princess Graziella manages to catch the attention of some unexpected reinforcements. When help arrives, he can finally break away from the fight and confront the real mastermind behind the coma incidents. Can Suimei clear Liliana’s name and settle things once and for all? His friends will have to hold off the raging imperial princess in order to buy him time... but can they do it on their own?