Ren is the stage name of Risa Kubota, a Japanese artist credited publicly as Ren (Risa Kubota). That combined credit is the most useful way to identify the performer in music listings and catalog records, because it links the stage name with the personal name behind the project.
For listeners searching releases or appearances under either version of the name, the format helps reduce ambiguity and keeps the artist easy to trace across credits. Ren (Risa Kubota) is therefore the clearest public reference for this Japanese artist.
