After nearly finishing with their first winning season in franchise history, the Toyama Grouses will not have Kazuaki Shimoji at the helm in 2012-13. Serious health issues appear to be the primary factor, league insiders told The Japan Times.

The Eastern Conference club announced on Wednesday that Shimoji would not return for a second full season in charge. His contract had expired and that opens the door for another coach to step in.

Shimoji took over as head coach in February 2011, when Kohei Eto was fired with the team stuck in last place in the Eastern Conference with an 8-18 record. Shimoji led the Grouses to a 5-13 record to close out the season.