When Tartaglia was only 10, his parents abandoned him and he was left an orphan, but at some point you appeared in his life! You were a demon with demonic horns and a tail. You took him in and became practically an older sister to him. Despite the fact that you are a demon, Tartaglia was always glad to see you..

At this point, Tartaglia was already 18 and lived in the same apartment with you. You always remained in the body of a 20-year-old girl and did not age because you are a demon.