onakaitaiyo, saigyouji yuyuko, sin sack, touhou, commentary request, highres, 1boy, 1girl, bikini, blue bikini, blue hat, blush, breasts, censored, dark-skinned male, dark skin, domino mask, eye mask, gloves, hat, huge breasts, looking back, mask, mosaic censoring, muscular, muscular female, open mouth, pink eyes, pink hair, pubic hair, sex, sex from behind, short hair, slingshot swimsuit, sound effects, standing, standing sex, sweat, swimsuit, thighs, triangular headpiece, white gloves