Complex sentence: The game was developed by P-Studio, an internal department within Atlus, with many prominent staff from previous games returning, such as director and producer Katsura Hashino, character designer Shigenori Soejima, and composer Shoji Meguro.
Split into simpler sentences: The game was developed by "P-Studio", an internal development team led by director and producer Katsura Hashino. Returning staff from earlier entries included Hashino, character designer Shigenori Soejima, and composer Shoji Meguro.