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.

“I will keep showing what I've learned at Kashiwa, while doing my best to reach an ever higher stage,” said Sekine on Kashiwa Reysol’s social media.

Sekine joins Japan internationals Junya Ito and Keito Nakamura in the Reims squad.