Do Not Speak Loudly

His public identity is an ordinary university teacher, but his other identity is a magician. His family has been tracking a demon for generations, and after several generations of hard work, it has finally reached his generation, and his generation is the end of everything, but also the beginning of everything. She is also a university teacher. Her originally carefree life was broken by a sudden and strange incident. She naively thought it was just a coincidence, but little did she know that all of this was already doomed.