Our Lunch Turned into a Disaster!

Kleos Ergo, a 3rd Year graduate of Blazing Magic Academy, an elite magic institution. He started attending Katsurami Highschool, in the human world. Where he meets Matsu Hizaki, a classmate of his who is an average shy/silent type. The only thing is, nobody is acknowledging her presence. It's only normal if only the classmates are doing it, but even the teachers... Suddenly, a Chaotic Dracomancer appears inside their classroom....