紗奈(nài )(🛤)離職後(hòu ),從(🗼)東(dōng )京回到了沖繩。她遇到(dào )許(❣)久(jiǔ )不(bú )見(jiàn )(♑)的後輩蒼井,身為紗奈親弟(🗄)弟朋友的他,竟向她告白。隔(gé )日(🚥),在(🕌)海邊約會(huì )的兩人遇上了(🙁)傾盆(🚸)大(dà )(🖍)雨,在(zài )無人(rén )的海邊享受瘋(fēng )狂(🚢)的(🌙)兩人(rén )世界(jiè )……