Yandere Mahoutsukai wa Sekizou no Otome shika Aisenai: Majo wa Manadeshi no Atsui Kuchidzuke de Tokeru

Lara, a sorceress of the kingdom, was sent to deal with a minor demon with her young apprentice, Alistair, who had a crush on her. But there they found a dragon, the most dangerous monster in the world! Lara and her apprentice tried to escape together, but they found it impossible to get away, and Lara had to use her special magic to get out of their predicament, but...?

(Source: Takeshobo, translated)