original
amiba00
1boy, 1girl, \m/, arms behind back, bdsm, bondage, bound, bound arms, bound knees, bound legs, bound thighs, box tie, breasts, brown eyes, brown hair, buckle, competition swimsuit, covered nipples, crotch rope, dolphin, flippers, freediving, imagining, large breasts, legs together, male swimwear, mermaid costume, monofin, one-piece swimsuit, rope, shibari, swim trunks, swimming, swimsuit, underwater