is thought she may be dead as when she went missing Rikuo found her room "all splattered with blood". Her relationship with Rikuo is unknown; he is determined to find her and is certain that she is still alive. It has been implied that Tsukiko cannot swim and that Rikuo once saved her from drowning. In recent chapters it is clarified that Tsukiko is Rikou's elder sister, and also his only living blood relative. She appears in one of Kazahaya's dreams and speaks to him, suggesting an ability to enter dreams. She can also see the future, albeit only a day or so ahead. Satoru is a student at an all-boys private school. He is Vice President on the student-body government and was a victim of attempted rape. Unbeknown to his classmates and himself, he has the ability to project a piece of his soul out of his body in order to fulfill the desires of his subconscious. Crossover with other CLAMP works In the second volume of Legal Drug, Kakei purchases clothes from "Piffle Princess" for Kazahaya to give to a girl from Ohto High in exchange for her uniform. In Angelic Layer, this was a store selling Angelic Layer merchandise where people could practice fighting with their Angels. In Suki, Piffle Princess appears as Caffe Piffle Princess, a café frequented by the main characters. Piffle Princess also appears in other CLAMP works, including Chobits, xxxHolic, Tsubasa: Reservoir Chronicle, Kobato, and Cardcaptor Sakura. In the world in which Legal Drug occurs, Piffle Princess appears to be a popular clothing store. A dress from Piffle Princess is given to a student at also known as (the Japanese word for vomit (謳吐) is also spelled Ohto). Hinata Asahi from Suki — Hinata, her teacher Shiro Asou, and Ohto High all appear in Suki as well. The Atashi character from Chobits appears, such as on a clock in the Green Drugstore. Rikuo and Kazahaya have appeared in xxxHolic; Watanuki is sent out to purchase a hangover remedy and enters the drugstore where the two work. He sees ghostly images around them (Tsukiko and Kei) and observes that there is some strong bond between the two. Furthermore, the High Moon Urn Yūko Ichihara has obtained in volume 5 from the "anything store" is actually the same vase retrieved by Kazahaya and Rikuo in volume 2 of Legal Drug. In volume 2, Kazahaya walks