Bound to the Fox Demon King

Seraphina Thorne, a servant of The Onyx Spire Sect, is manipulated by her Master to go to Mount Astra and slay the Fox Demon King, Blaine. She mistakenly identifies Blaine as a Celestial Master and becomes his apprentice. She uncovers her Master's conspiracy and the truth about the demon race. They join forces to fight Valerius and Elder Blackwood, resolving the feud between human and demonkind. They protect world peace and find love.