You Don't Understand is the seventeenth chapter of the Oushitsu Kyoushi Heine manga.
Heine rushes over to the King's study, where he meets the strange man again. Inside, the King, assuming that Licht is only doing his job for fun, scolds Licht for endangering himself to play games, risking the line of succession. Licht angrily tells him that he takes his job very seriously, and that he never cared about him when he was younger. He then runs out, shouting that he doesn't understand, causing Viktor and Heine to chase after him. Licht runs out into the city and decides to go to the café, the only place he can turn to. As he decides to go ask for a place to stay there after work, the King and Heine arrive on horseback. The King seems to have a plan in mind. The Café Owner comes out and demands to know where Licht was. The King asks him if he could work at the café for a short while, shocking both Licht and Heine.