Leveling Elite Souls is a lot slower than Standard ones. Its like you are trying to level Standard Soul/Girl from 20 to 40. Something tells me that 20 levels leveling on Legendary Soul will be then like getting Standard Soul/Girl from 40 to 60 so slime pace.

For now its an OKish game to casually play just for sake of h-scenes. But my luck in gachas gives me mostly weapons - no new girls - with that there is probability I will just get to all scenes of all girls I have and get bored and drop this game.