1girl, alice_gear_aegis, ben1shoga, bikini, breasts, hands_on_own_stomach, ichijou_ayaka, long_hair, looking_at_viewer, navel, own_hands_together, pink_background, purple_eyes, purple_hair, simple_background, small_breasts, solo, stomach, striped, striped_bikini, swimsuit, thighs, twintails