Although Koki is currently in the US, offering support to his brother Tomoki ahead of his WBO Bantamweight title defence against Pungluang Sor Singyu, he would still have wanted to know whether or not the JBC had passed the transfer or not. Instead it seems they are going to be looking into various parts of the request.
This delay in making a decision will almost certainly force Watanabe Gym, the team behind WBA Super Flyweight champion Kohei Kono (30-8, 13), to contact the WBA asking for an exemption to the mandatory fight between Kono and Kameda.
Whilst there is a possibility for Koki to base himself out of Japan in the interim, it seems likely that he will wait for the JBC to conclude their review of his transfer and then decide what to do. At the moment this is a delay as opposed to a set back, it's an inconvenience as opposed to an immediate problem and hopefully the JBC will convene to finish their review sooner rather than later.