The Master Is Too Cruel and the Witch's Apprentice Can't Even Think About Running Away

She is the Queen of the Demon Emperor; He is the supreme god in the divine world; She is his disciple; She wants revenge; He follows her; He immediately became a demon and could never be reincarnated for eternity; She was exhausted trying to save him and was reduced to ashes; ... Afterlife... Disciple, Master has been waiting for you for tens of thousands of years, and you won't come back soon... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.