Konna Otoko ni Dare ga Shita

A young and charismatic teacher visits his pupil's home, where he encounters an old classmate who had mysteriously disappeared from his life one night. Now, the classmate has reappeared as his student's debt collector, raising questions about the circumstances of their reunion. As the teacher's past and present collide, he must confront the complexities of their complicated history. In a separate storyline, a pharmaceutical salesman visits the room of a doctor who has fallen ill with the flu. The doctor agrees to purchase medicine in exchange for the salesman's services, but it soon becomes clear that their arrangement is not a straightforward transaction. As the salesman's true intentions are revealed, the doctor is forced to reevaluate their understanding of the situation and the nature of their agreement. A third narrative follows an office worker who has been downsized from his position. He is taken under the wing of a street-smart university student who helps him to transform his image. However, as the office worker attempts to exact revenge on his former colleague who had stolen his girlfriend, he discovers that his adversary is more complex and multifaceted than he initially suspected. In a darker and more ominous tone, a student with a somewhat demonic nature is confined to a room by a seemingly benevolent teacher who has decided to take his own life. The teacher's obsessive behavior has a profound impact on the student, causing him to forget his deep-seated hatred for society and confront the true nature of his own existence.