Tohru, an ardent follower of the malevolent Demon King, who met his demise in the manga 'Lapis Lazuli World' and marked the culmination of a happy ending, found herself in utter despair.
"I longed to offer you everything."
Amidst these final musings, Tohru plummeted from a towering edifice. Upon regaining consciousness, she realized she had been transported to the realm of Lapis Lazuli, within the walls of her cherished Demon King's castle.