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Sister x Sister
- Tracklist
- Sister x Sister
- AM Zeroji no Hanazaisha (AM 0時の犯罪者; The Criminal of 0 AM)
- Sister x Sister (Original Karaoke)
- Information
"Sister x Sister" is the first single released by Nara Mika and OZ. The title track was used as an theme song for the OZ Group commercials and the ending for the TV Arashi show GAHAHA Oukoku.