mirai nostalgia, purple software, kudo hinano, koku, siki, 4:3 aspect ratio, game cg, 2girls, ass, bare shoulders, bent over, blue hair, bra, breasts, brown eyes, clavicle, cleavage, dutch angle, from behind, green bra, green panties, hair ornament, hair ribbon, kudo hirano, kudo nono, lingerie, long hair, looking at viewer, looking back, megane, multiple girls, navel, open clothes, open mouth, open shirt, pantsu, pink bra, pink panties, ponytail, purple eyes, purple hair, red eyes, ribbon, shimapan, short hair, short twintails, siblings, sisters, skirt, sliding doors, striped, striped bra, twintails, underwear, undressing, potential duplicate