"I'm gonna show you that a side character can be the main character too."–Herabella Venturi
"I beg your pardon?"
“You want me to what?!” I asked aloud what a God had said to me. Is he serious right now? “You want me to save… the villainess?”
"Over and over again? Do you want me to repeat? Save Princess Melusine Ondine, try not to let her die. ” I slapped his forehead and held him on his shoulder.
“Look here God… whoever you are. What you are requesting of me is very impossible ...

When she encountered the greatest betrayal of her life and had nothing left, she was desperate. Suddenly, a mysterious man entered her room, hugged her, and whispered into her ear, "Do you want revenge? Then give yourself to me." His devilish whisper tempted her, and when he finally removed his mask, she realized that the man was actually... What kind of ending will she and him ultimately have?