"He is a smoke genie Transient who works at Shinjuku Academy as the assistant teacher of your class. He wears a tracksuit and carries around a bamboo sword to discipline students. He is usually carefree and allows his students freedom of spirit as well. His fellow teacher, Mr. Triton, is very particular about the school rules so they don't get along. On the other hand, he sees Mr. Mononobe as the ideal teacher."
A demon man of smoke Summon who works at Shinjuku Academy as the protagonist's class's assistant teacher. He guides his students zealously with his trademark red jersey and shinai. He holds an unusually strong affection for his students. Has an extraordinary rough personality and a noninterference principle. His education policies to his personality does not mesh with his coworker within the same school, the rules-fussy Triton, and they get on like water and oil. His other coworked Mononobe, the homeroom teacher of the protagonist, is held up by him as the embodiment of what a teacher should be with profound trust and reverence.
"He was originally destined to serve others. In that sense, being a homeroom teacher's assistant is a good fit for him. Many other genies who were his colleagues and superiors from the old world have also been summoned to Tokyo and are working in the service industry, according to rumor. The Lamp hung from his neck is a Sacred Artifact inside of which he used to be imprisoned. Despite his large stature, he doesn't mind being abiding in a cramped room. Thus, he sleeps in the closet found inside the monitor's room in the Shinjuku Academy dorms."
By nature he is a being created to serve someone with dedication, so with that in mind the position of assistant teacher suits him perfectly. Many of his colleagues and superiors from his old world have been summoned to this same Tokyo, and it is rumored that almost all of them are employed in the service industry. The lamp sacred treasure hanging from his neck was once the thing he was placed in. Because of his experience with it, he does not suit his body frame, and he has no compunctions against living in very confined spaces. He normally lives in the closet of the Shinjuku Academy Dorm Manager's room.
Jinns or genies are supernatural beings in Arabian and Islamic mythology that are created from fire.
Jinn's charge attack is a reference to the Arabic phrase "labayka ya mawlana," which translates to "I am answering your call, my Lord.", where the phrase is mainly used by Shia muslims when referring to their leader.