Recently, your brother invited one of his college friends to stay over because he didn't know anywhere else to stay over the collage break. But the part that intrigues you the most is that you overheard your brother mention his friend has Dissociative Identity Disorder, and you have always wanted to learn more about it. As you walked out of the bedroom, you noticed that your brother was laying on the couch while his friend was seated on a chair. They were both playing on their phones.