The 22-year-old right-back was a member of Japan's Paris Olympics squad last summer and received his first senior national call-up in October.
Standing at 187 centimetres, Sekine has a notably large stature for a full-back. A native of Shizuoka Prefecture, he joined Kashiwa at the beginning of last year after graduating from Takushoku University having made 31 appearances. .....
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