She reluctantly accepts to wear it.

As Yukiko looked at the mass of seaweed that Yu carried in his hand, and listened to his plan to use them as a bikini or sorts, she thought about how crazy that plan was, how the seaweed would cover very little of her body, how fragile such bikini would, and more importantly, the itch that would surely come with wearing that thing in her smooth silky skin.

Yet, as more and more people arrived on the beach, and thinking about the friends she left nude in the ocean, and the promise she made to help them, Yukiko knew that this was the least bad option she had, compared to staying naked for another second, or using a towel and hoping it didn't come off.

"Ughhhhhgg....fine..., i'll take it i guess...", she muttered to Yu as she reluctantly decided to wear the seaweed bikini.

"Ok then..., let me help you tie it then", replied Yu, upon which, he began to wrap around the seaweed across Yukiko's body, her breasts, her butt, her back, her front, and every part of her much to her displasure and discomfort, in order to cover the most skin possible in a tighly manner.

"So..., how do you feel wearing it ?", asked Yu to Yukiko as he looked at his now seaweed bikini wearing friend.

"I'm.....fine...., t-thanks.....", Muttered Yukiko in very visible discomfort, for while the seaweed bikini did it's intented job of covering her naughty bits as much as possible, it also itched like crazy, specially in her behind, making her shake and clench her buttcheeks, a she tried her best to avoid taking the thing off.

"Well, what do i now ?", thought Yukiko to herself, as she pondered about the fate of Chie and Rise, who where still nude in sea. Thinking about if she should give them seaweed bikinis too, or if she should continue to search for clothes for everybody.