Sushi Koyo is a popular restaurant specializing in fresh sushi and Japanese cuisine, located in Diamond Bar, California.
Operator computes a Health score every night at 2 am HST. It is the one number that tells you if this shop is winning, losing, or steady. Here is how Sushi Koyo broke down on May 9, 2026.
Operator ranks every sushi restaurant in Diamond Bar every night at 2 am HST using reviews, response rate, and local market share.
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