From my understanding having not played the game due to the language barrier, the female characters appear in the game as children, teens & adults, so the characters seen here who look similar are actually the 3 ages of the same character as seen in the game (i.e. Sawai Natsuha, the brunette dead center in 3 forms, as well as Arishima Alice, the black-haired girl to the right or her (Natsuha's left) in the picture in her child, teen & adult forms)...