It appears
he departed from Koei Tecmo on March 31. He acknowledged April Fools day, but also said
it was something he has been set on for about 2 years. This timing likely has to do with Blue Reflection, his last game for Gust coming out a couple of days ago, for which he composed all the BGM.
Sucks for Gust to lose this guy. I wish him luck in all of his future endeavors.