Iijima Ritsu is the central character of Hyakkiyakou Shou/Selected Pandemonium. He has the ability to perceive the supernatural, inherited from his grandfather, Iijima Ryou (pen name: Iijima Kagyuu), a novelist who wrote about his own supernatural experiences. Ritsu was dressed as a girl as a small child in order to ward off evil, as per his grandfather's wishes. His grandfather died when he was very young, but left behind Blue Storm, a guardian spirit contracted to protect Ritsu. Ritsu is in high school when the series begins, and together with Blue Storm and his cousin Tsukasa, he deals with spirits both friendly and un, supernatural objects and occurrences, and occasionally even real-world problems.

(Source: written by user AletheiaTruth)