the MC defeated his brother, but AFTER he got himself cursed by playing a flute that was given to him by the corrupt Lukna. Kurt believed that the flute he got is one that would call a dragon (or a few), but instead he got one that calls evil spirits and got cursed in the process. Bell, with the help of Elise, defeated him. After that, Kurt's vengeful spirit escaped and chased Lukna just to kill him, his family, and some more corrupt nobles related to him (and probably their families as well).