The development team, which was dubbed Team Maniacs,
[18] included both staff who had worked on previous
Shin Megami Tensei titles and newer staff who had not. There were differences in thinking between the two, which led to conflicts. As an example of this, game director Kazuyuki Yamai said that some of the staff would be used to contemporary games featuring "sweet" female characters who "say nice things", and as a result would want to add that "sweetness" to
Shin Megami Tensei IV; meanwhile, Yamai saw the series as having "bitter" content, and thought that it would not be possible to add "sweetness" to it. Additionally, the staff members had differing images of the meaning of
Shin Megami Tensei; Yamai thought that the good points of each staff member's interpretation should go into the aspects of the game they were in charge of, while not deviating from the "bitterness".