A collaboration between Okinawa electric girl saya, a musician from Okinawa whose popularity is rapidly increasing, and Aika Higashimori, an actor and film director from Yonaguni. The song "Night festival~Yuru Nu Umachi~" will be released on June 1, 2024 from SHISA SOUND WAVE, a new label launched by Fujiwara Kamui. A single will be released ahead of the new album. SAYA's song is based on the lyrical melody and downer track composed by Okinawa electric girl saya, and incorporates Japanese and Okinawa language. The world's first Yonaguni language rap by Aika Higashimori, which received a great response on SNS, has been mixed to create an unprecedented new Okinawan music.