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Hirokazu Yasuhara - Wikipedia
Hirokazu Yasuhara | Sonic Wiki Zone | Fandom
The origins of Sonic the Hedgehog - Polygon
Game Design Psychology: The Full Hirokazu Yasuhara Interview
Sonic the Hedgehog - Wikipedia
The Making of Sonic the Hedgehog and a Chat With World …
Sonic the Hedgehog co-creator Hirokazu Yasuhara joins Nintendo
SEGA Superstars: Hirokazu Yasuhara | SEGA Nerds
Hirokazu Yasuhara - IMDb
Sonic the Hedgehog co-creator is now a Nintendo employee