Determination! Yandere various My Hero Academia x Undertale reader

"I Heard The Stories They Told To Me...- This Happy Ending Cannot be, Let's Go Together We Shall See, Together For All Eternity!" Y/n dreemurr did what she could to save her friends, She holds all their souls in her body, And now she wants to make sure no one has to go through the pain she went through. Y/n Dreemurr w...