Unmei no Oaite wa?

"My dream is to be happily married!" Helen, filled with the desire to fall in love, visits the Love Mansion, where a legend claims that if any unmarried woman stays at the mansion on her birthday, the next man she meets will be the man of her destiny! However hearing strange noises in the darkness, Helen starts to regret her idea. "It was reckless for me to come here on my own." Suddenly a large shadow appears in front of her! Who could this be...?