Sports and physical education Best 4-stroke lesson No. 1 YouTuber Tomokin teaches the easiest and most accurate swimming technique with video Water sports
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Japanese title: 単行本(実用) スポーツ・体育 最高の4泳法レッスン No.1YouTuberトモキンが教える 一番わかりやすくて正しい水泳テクニック 動画付き 水上競技