No info about Kei's next tournament.
He has pulled out from the Tulsa challenger next week.
On Japanes TV he was saying that his next tournament will be in Japan, so I'm guessing he may not play until AIG Japan Open which starts on Sept. 29. He's the first on the alternate list, so, considering the tournament's history of many last minute withdrawals, I think he will definitely make it to the main draw.
Don't know what he will be doing before that, maybe some media commitment and recovering fitness?