 For the fourth game , Takumi wrote the scenario and took on a supervisory role . He had wanted the series to end with the third game , as he felt Phoenix had been fully explored and that his story had been told ; he said that it is important to know when to end a story , that he did not want the series to become a shadow of its former self , and that he did not see any reason to continue it . Despite this , the spin @-@ off series Ace Attorney Investigations was created , being directed by Takeshi Yamazaki and produced by <unk> <unk> ; Takumi returned to the series to write the crossover Professor Layton vs. Phoenix Wright : Ace Attorney . He also directed and wrote Dai Gyakuten Saiban , which was described as being the first entry in a new Ace Attorney series . He said that he has mixed feelings about the series being developed by other Capcom staff , comparing it to a parent sending their child to their first day in school . Yamazaki and <unk> went on to direct and produce the main series entries Dual Destinies and Spirit of Justice . Due to exhaustion after working on Dual Destinies , Yamazaki split direction responsibilities with <unk> Fuse for Spirit of Justice , with Yamazaki working on the scenario , and Fuse on the art and gameplay . 
