Yeah. Though we sorta got messed up for a bit, cause Atlus brought over Disgaea first, and then when that was a success, Mastiff jumped on La Pucelle a year before NISAmerica established. So sometimes people think La Pucelle came after, not before.
But there's definitely a ton of mechanics introduced in La Pucelle that were carried over to the rest of NIS's SRPGs, like the leveling of skills, 9999, a "dark world", chapter separated segments, combo attacks in a form. It really established a lot of things.