First names for Youyama
- Kazuya Youyama 2
- Ikuyo Youyama 2
- Hidehiko Youyama 2
- Hanae Youyama 2
- Yuuri Youyama
- Toshiyuki Youyama
- Tomoko Youyama
- Takeshi Youyama
- Takenori Youyama
- Takashi Youyama
- Natsuki Youyama
- Naoki Youyama
- Mami Youyama
- Daisuke Youyama
- Chihiro Youyama