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- First Name: Hiroo
- Family Name: Otsuka
- Native name: 森山周一郎
- Also Known as: Moriyama Shuuichirou, 大塚博夫, もりやま しゅういちろう, おおつか ひろお, Ootsuka Hiroo
- Nationality: Japanese
- Gender: Male
- Born: July 26, 1934
- Died: February 8, 2021
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