"Teacher Shinichi, what did those two do? Are you actually torturing them with math test papers?" Koizumi Nanako asked, walking up to Shinichi.
"Ah, this! You can ask Kankuro-sensei about that in just a moment!" Shinichi smiled slightly, withholding the reason for the moment.
Just as Shinichi finished speaking, Kankuro pushed open the office door and walked in.
Chapter 74