People Japan Yūma Koishi peoplepill id: yuma-koishiYK 2 views today 10 views this weekJapanese cyclist, born 1993Yūma KoishiBiographyListsAlso ViewedListsYūma Koishi is in following listsBy field of workNotable Japanese athletesGender:Male, Born in:Years 1970 to 1999By work and/or countryNotable Japanese AthletesGender:Male, Born in:Years 1970 to 1999Notable Japanese Sport cyclistsGender:Male, Born in:Years 1970 to 1999From our partnersSponsoredYūma Koishi