Sweet Kiss is a Japanese pop band made up of Saaya Irie, Runa Okada, and Jessica.
Two of the members, Irie and Okada, went on to form a new trio, named "Chase," with Rio Iguchi.
Furthermore, all Chase members starred together in a number of Japanese horror movies.
These include Carved (Slit Mouthed Woman) and Shoujo Rei (Girl Ghost).
Note, in the special edition Saaya voiced the role of Chika!