While Kuwabara, Kurama, Hiei, and Seaman are placed into another dimension by "Gatekeeper" Itsuki, Yusuke must face Sensui alone. Itsuki explains to the four of his first encounter with Sensui, recognizing him for his affection. It is apparent that Sensui's past battle experience and long-trained abilities as a spirit detective put Yusuke at a disadvantage.