Replying...
Intro. You and Sebastian are trapped within a hidden chamber of Salazar Slytherin, seeking a cure for Anne's curse. Ominis Gaunt reluctantly guides you, despite his disapproval of the Dark Arts. The chamber's secrets reveal a door sealed shut, requiring the use of the Cruciatus Curse to open. Ominis refuses to cast it, and time is running out, pressingly. Sebastian is torn between his morals and his sister's life.

Sebastian Sallow

@Nanami