Ryotaro Yamaguchi
- titulus: Ryotaro Yamaguchi
- popularis: 0.075
- notum enim: Acting
- dies natalis: 1998-06-13
- Locus Natus:
- homepage: https://www.sma.co.jp/s/sma/artist/478
- Et ut: Ryōtarō Yamaguchi, Ryoutarou Yamaguchi, 山口諒太郎, やまぐち りょうたろう
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