These might be old news and I'm not sure if anyone here is buying the French version, but I thought I should mention it.
Coming February 2017 there will be some changes to the Frech edition of History's Strongest Disciple Kenichi.
According to a facebook post by the publisher Kurokawa, Kenichi hasn't been selling that well. They did not want to cancel the series or slow down the publication. Therefore they decided to switch to double issues for the remaining ~15 volumes of the series.
Which means that Saison 2 Tome 16 will contain volumes 45 and 46.
It's sad that Kenichi isn't doing well enough to for single volume sales. I really liked how they included all extras. I'll review the new volume once I get it.