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Naoyuki Koike (小池直幸) (2023KOIK01) has 2 nemeses in the country (Japan):

	WCA ID	Name
2008ITOH01: Hirotaka Ito (伊藤大平) View WCA profile Head to head with 2023KOIK01 See who I nemesize (2391)	2008ITOH01	Hirotaka Ito (伊藤大平)	View Hirotaka Ito (伊藤大平)'s WCA profile	Compare Hirotaka Ito (伊藤大平) with Naoyuki Koike (小池直幸)
2013AOYA01: Oto Aoyagi (青柳吟) View WCA profile Head to head with 2023KOIK01 See who I nemesize (2119)	2013AOYA01	Oto Aoyagi (青柳吟)	View Oto Aoyagi (青柳吟)'s WCA profile	Compare Oto Aoyagi (青柳吟) with Naoyuki Koike (小池直幸)

Based on data export from 2nd December 2025
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