It appears that 39 year old Daisuke Kusakari, one of the animation directors on the fall anime Log Horizon, has passed away due to a stroke. In addition to Log Horizon, he also worked on the animation in The End of Evangelion, key animation in a variety of series, and one-off episode animation in many more. He will be missed.

Source: http://yaraon.blog109.fc2.com/blog-entry-206…