There's Something Wrong with My Master

In her previous life, Duan Xiangsi was reviled by everyone and had a terrible reputation. Her beloved master personally ended her life. The demon girl who should have been suppressed by every sect was reborn as... a little fool? A little fool whose sweetheart had broken off their engagement, whom everyone despised, and whose parents had died young. Fine. They were all equally unfortunate, so she'd help get revenge, then find somewhere no one knew her and settle down. But her master, who should have been in seclusion, suddenly came down the mountain and insisted on giving her a little wooden sword. He always interfered whenever she was up to something "bad." Was there something wrong with this master?

Master: "Loving you is my affliction, incurable by any medicine."

Duan Xiangsi: "You're seriously ill."