[Machine Translation] R, a sister duo from Amagasaki, Hyogo Prefecture, Sumika & Yuka, have released their 4th single! This is an exhilarating summer love song number. The song is set against the backdrop of the sea in summer, and is a sparkling song about the feelings of passion and anxiety that swell up when you fall in love. An acoustic version of "Akai Ito", the theme song of the popular TV drama "Niji no Kanata" is also included!