There are several changes that have been made to locations in the overworld compared to the original game due to being set in an alternate timeline: Excluding the false Igor in Persona 5, this game marks the first time that recycled voice lines of Isamu Tanonaka are not used https://tinybookmarks.com/story20058969/persona-5-the-phantom-x-op%C3%A7%C3%B5es