She gets thrown overboard with a tidal wave taking her back to shore

She makes it to the pier where the boards are and, no surprise, the employees are staring at her like she just insulted their mothers, something she'd probably do on a regular basis if most of her friends actually had a mom to insult.

"Oh uh, lady, why are you walking around the beach naked?" One of the guys asks.

"Does it matter? It's not illegal here right?" Kafuru snaps trying to reason with him.

"I-I guess not, but we never really see nudists or skinny dippers here anyway. I apologize for making you mad." He bows to apologize. "Guessing you want a board or something?" Kafuru nods and takes one without hesitation.

"Come to think of it, I don't think we've seen her on a board before? Would you like a lesson or two?"

"No, I'll just figure it out."

"It'll just cost like 500 yen."

"Yeah well I'm naked which means two things there: Do I look like my wallet's even on me? And why would I want to summon more people anyway?"

"I guess I didn't consider that first part." Kafuru tries to get her surfboard off the sand and into the water. It takes her a few tries, with at least once flinging her pussy into the air. Good thing her back was facing the rest of the beach. After some struggle she finally kicks off into the ocean. You'd think being the queen of the waters would mean this wouldn't be hard, and not in the horny way either...usually, but not today.

Kafuru slowly drifts farther and farther away from the beach almost like she's trying to go find some other island to live on and be a nuisance on. After about an hour or so, she feels her balance start to slip a bit a bit despite the smooth sailing without doing much earlier. She looks ahead and sees a huge wave heading right towards her, which leads to her gulping in fear. "Fucking great." She says, knowing what's next will not be good no matter what. She gets thrown overboard, leaving said board behind but finds an inflatable banana to ride on instead. Just in time too, because......

...Yeah, the waves start rushing towards her. She tries with inevitable futility to scoot the banana boat forward to beat the waves, but even in a panic, she knows this won't do much of anything, even delaying the inevitable. Within about 5 minutes, Kafuru finds herself washed up back on shore, faced down, butt sticking out and in the middle of a crowded area of the beach.