Surfing nude! (Patreon)

Isamu and Aika arrive at the beach. The beach was filled with people, all enjoying the sunny summer weekend. "Ahh, this is the best! I can't wait to hit the waves!" Isamu exclaimed out loud, surfboard under her arm. "Let me just change, can you pass me the suit I packed, Aika?"

Aika rummaged through her bag, holding a string bikini in her hand. "Here it is!" Aika tried to hide her amusement as she handed the tiny swimsuit to Isamu. "This isn't it! I packed a proper wetsuit!" "Oh, that? I threw it out of the bag at home!" Aika smiled mischievously. "I guess it's the string bikini or nothing!"

Isamu looked at her options, and knew if she wore her clothes into the water she would have to go home with wet clothes or nothing on. "Damn you, Aika!" Isamu ran to the nearest changing room and wore the sling bikini, still intent on surfing.

Isamu came out in her new swimsuit, barely covering her nipples and crotch. Aika whistled at Isamu. "Looking hot, Isamu!" Isamu just blushed as more people began to notice her sexy outfit. "I'll feel better when I'm out in the waves!" She got into the water and paddled to catch a wave.

"Ahh... at least I'm alone out in the water. I could be wearing nothing and be fine this far from everyone!" Little did Isamu know, her hypothetical was about to be a reality. The string bikini was held together with dissolving threads, each moment in the water slowly compromising the integrity of the swimsuit.

Isamu caught a big wave and rode it masterfully. Her breasts swinging with each movement, eventually popping clean out of the string bikini. "No big deal! I'll just fix it later-" Snap! As she said that the threads had dissolved completely, causing it to fall clean off. Isamu looked down and was horrified. She was now completely exposed!

The momentary loss of concentration caused her to fall off her board. The waves, almost as if to make her day worse, washed her up at the most crowded part of the beach, far away from where Aika was. Worse still, the waves had taken her board away, leaving her with nothing but her hands to cover up. Isamu tried to cover up but her large breasts kept slipping out of her arms as she ran. She gave everyone a good look as she ran back to Aika!