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Isao Mitsuishi (三ツ石 勲 (みついし いさお) Mitsuishi Isao) is a 3rd year student at Kaio Academy.
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Etymology[]
- The name Isao means "meritorious deed, merit" (勲).
- Isao's surname Mitsuishi means "three" (三) (mitsu) and "stone, volume measure" (石) (ishi).