Yuji Naka is arrested by Japanese authorities on suspicion of insider trading related to the development of 'Dragon Quest Tact,' a mobile game developed by Aiming Inc. Square Enix held shares in Aiming and Naka allegedly purchased shares in Aiming before the public announcement of the Dragon Quest collaboration, using insider information.

Naka is re-arrested on suspicion of insider trading related to 'Final Fantasy VII: The First Soldier', another mobile game. He allegedly purchased shares in Ateam Entertainment, the game's developer, before the game's announcement.

Yuji Naka is found guilty of insider trading charges. The court acknowledges that he used insider information to profit from the stock market. He is sentenced to a suspended prison sentence and fined.