A quirky part-time high school teacher that appears to be carefree and uninterested in others at first. However, he solves problems through unusual ways and gradually win the hearts of both staff and students.

Kametaka Chisato is the head of the second-year students of Shiritsu Kikurei Gakuen High School and decides to hire a part-time teacher to maintain the work-life balance of the teachers in school. However, the part-time teacher is Endo Issei, who doesn't behave like a teacher. He appeared in school in a red polo shirt and flip-flops, and only wrote his social media account on the board during self-introduction. Issei has been creating various troubles since his appearance. Will he, who is ridiculed as a "looks-only teacher" help his students?—DramaWiki