At Café Mitter Meyer is the sixteenth chapter of the Oushitsu Kyoushi Heine manga.
Heine decides to stop at the Café Mitter Meyer after going to the bookstore, and encounters Licht, dressed as a waiter. Licht pretends that he's a lookalike, and proceeds to wait on him while panicking on the inside about his secret job being discovered. Licht shows off his prowess at being a waiter, but when Heine compliments him he tells him that when he first started at the café, he was terrible at everything, but thanks to the kindness of the staff he was able to improve, which is why the café is dear to him. Heine finally leaves, and Licht discovers a note from Heine in his jacket telling him to see him in his room as soon as he goes home. As Licht wonders what would happen, a mysterious man comes up to him and tells him that he's here to escort him home and that his father wants to see him. Meanwhile at the palace, Heine sits in his room and wonders if Licht would show up. He's shocked when he looks out the window to see Licht being escorted by the palace guards, with the mysterious man right behind him.