The Little Princess is the fifteenth chapter of the Oushitsu Kyoushi Heine manga.
Adele is distressed because she learned that she will be married off one day in a foreign country. Her brothers try to cheer her up, but to no avail. Not wanting to leave her home, Adele decides to marry Heine, and to everyone's shock, he agrees. They then leave, with everyone chasing after them. While hiding, Heine gives her a betrothal ring made from a flower. Adele expresses her fear of being sent to an unknown land where she knows no one. Just then, her brothers find them. They tell her that they won't let her get married off unless her future husband proves himself to be trustworthy, and tell her that they'll always protect her even if she's far away. Leonhard mentions how happy their parents were when she was born. This managed to put Adele's fears to ease, and Heine tells her that they're breaking off their engagement. She decides to get her portrait painted so that she can show it to her brothers and Heine.