Orix Buffaloes announced that it has re-signed infielder Kosei Osato as a development player. After the first-team schedule was completed, he participated in the Phoenix League held in Miyazaki, where he injured his right shoulder while batting. In October, he underwent arthroscopic stabilization surgery for a recurrent dislocation of the right shoulder, and in the same month, he was notified that he would not be signed to a contract with the team for next season. number will change from 64 to 122.

In his fourth year as a pro, he played in 46 games this season, posting a batting average of .224. Not only did he play every position in infield, but he also played outfield towards the end of the season, making his presence known. "I'm known for being able to play anywhere, so I'm going to keep challenging myself. I'm doing my best to increase the number of opportunities I can play, so I want to continue doing my best so that I can play anywhere." Regarding the condition of the injured area, he explained, "I've resumed jogging and 'exercising'. It's going well."

"I want to come back as soon as possible. It would be best if I could come back around late April to early May," he said. First of all, he will make sure his body is in top condition and then rejoin the battle for position.