Kagami Junichirou was celebrated as a physics prodigy during his teenage years, even having his work featured in “Nature.” Yet, after completing his college education, he abruptly lost all passion for science. Embracing the life of a NEET, he immersed himself in his anime blog and indulged in his geeky collecting hobbies. He humorously insists that he suffers from a condition he calls “I can’t do anything I don’t want to do.” In a bid to motivate him, his younger sister secures him a position teaching physics at their former high school. Although his teaching methods are unconventional, he quickly gains popularity among the students. After assisting a girl who is being severely bullied, Kagami discovers a newfound enjoyment in teaching. Will he pursue this quirky teaching path, return to the world of physics, or revert to his previous lifestyle?