Sayako, also known as Saya, is an 19-year-old German rapper, singer/songwriter and record producer. He started producing music in the early 2020s and started singing at the start of 2022. Since 2020, he has released over 90 songs. He is inspired by Japanese visual novel games. He often names his songs with titles in near-unintelligible fonts, stating "I just think normal song names are boring".