Jouichi Shikigami, a sixteen-year-old third-year student at Virtue University, is quite the pedophile. Then, two sisters named "Seia" and "Mia" from another world, "Titia," appear in front of him. They ask Joichi to become a "Dream Player (DP)" who can take away people's nightmares. "I can only rely on you, big brother! In the city of Toshitoku, where Joichi lives, various nightmares are somehow spreading among the girls. But the DP's mission, though rare, involves a risk to life. Scared, Joichi decides to turn down their request as soon as possible. Then, a mysterious old man named Naojiro Togi gives Joichi the Pink Deesa. With the power of the Pink Deisa, DP will be able to have sex in his dreams, just like in real life. Instantly feeling horny, Joichi offered to become a "trial DP" to Seia and Mia. In order to enter their dreams, they must use a magical cell phone called a "Disaphone. Joichi's first task was to remove the nightmares of Mio Sakura, who lived in his neighborhood. Because of her nightmares, Mio has been wetting the bed frequently lately. What is causing Mio's nightmares is a mysterious entity called "Rune"... [Translated from the official website]