Kosei Oshita is a 16-year-old professional football player from JPN. At the international level, he represents Japan U17. He plays primarily as a Goalkeeper. He stands at 185cm tall and weighs 78kg.

His most recent move was a from Kashima Antlers Jugend to Kashima Antlers U18 on 2025-03-31.

In the Shenyang Peace Cup 2025, Kosei Oshita played 3 matches, averaging 0 interceptions, 0 tackles, and 0 clearances per game.