For the first time in the series Bingo Morihashi was the game's writer. He collaborated with film director Yuji Shimomura who worked on the earlier games. Morihashi had many issues with the making of the game to the point he quit Capcom. However, after Itsuno's asked him to return, he did so. He finished writing the game's events, which took a year. Morihashi had difficulties with the characterization of Nero, the new protagonist. Dante returned as a supporting character. Itsuno was responsible for most of Kyrie's elements. She was envisioned as an "ordinary, cute heroine" who had a big impact on Nero despite not being a fighter. Her role was to motivate Nero and the player as the story progresses.