She left... Episode 3

In Kazuki's dorm room appears a mysterious ghost by the name of Elizabeth. Elizabeth demanded some things from Yuna and Kazuki. Later on, Kazuki broke his promise to the ghost which infuriated her. Elizabeth took Yuna to a void dimension where Kazuki thought she was being tortured, where in truth she was only being tickled. Kazuki used his precious magic to get Yuna back. His magic caused the women's and men's dorm to merge. Because Kuriko looks like Elizabeth's mother, Elizabeth decides to take up residence in Kuriko's breasts. Kazuki's magic count drops to six in this episode.