1boy, 1girl, bikini, black hair, blonde hair, blush, breasts, crystal, fangs, flandre scarlet, gradient background, hand on another's head, hat, hat ribbon, hetero, licking, licking nipple, micro bikini, mob cap, nipples, one side up, open mouth, red bikini, red eyes, red ribbon, ribbon, shaded face, short hair, side-tie bikini bottom, small breasts, solo focus, swimsuit, tokyo yamane, touhou, white headwear, wings