takei ayami (played by kitagawa keiko) is a grade-level teacher at a primary school. she has an angel-like beautiful face and always has a bright sunshine smile on her face, which is very popular among teachers and students around her. but cai wei's inner world is extremely cold and he is completely unaware of communicating with others. on this day, a strange one came from her class

because the address was discovered by the angel, the demon detective akuen (voiced by nagawa daisuke) decided to move the office to another place. at the same time, the news that yuichi (played by kamiya hiroshi) of the bessibu family suffered huge setbacks in the world spread throughout the demon world, and he himself was even more embarrassed and troubled. at this moment, the arrogant lucifer

at the machida high school, a group cheating incident was serious, campus violence caused a chain conflict between parents and teachers, and the misconduct of physical education teacher tetsuro shibahara (played by yamada takayuki) and art teacher takashi kumi (played by daihigata) have shamed this sacred profession. in this disorderly chaos, the head teacher of class 4 of year 2, renshi shishi (played by ito hideaki), continues his perfect and pure teacher myth. he is elegant, humble and friendly, and under his angel-like appearance, there is a cold and devilish heart. he devoted himself to the management, set up one undetectable trap after another, and quietly erased those who threatened his existence. physics teacher aii (played by fujitsuki) secretly investigates renmi's past and background, and tries to expose renmi's true face with his students keisuke (played by aya masata) and others.