Toshimichi Mori announced his decision at the weekend. He did not disclose the reasons, but noted that he would continue to develop games.
Mori has officially worked at Arc System Works for 19 years, joining the company in 2003. However, he began interacting with Arc System Works even before his official employment. As a tester at the outsourcing firm PicPac, he worked on the game Guilty Gear X, which was released in 2000.