Shintaro Murase is bilingual in Japanese and English. Born in Nakama City, Fukuoka Prefecture, Japan, and grown up in Tsukuba City, Ibaraki Prefecture, Japan. He is a male high school student at the United Nations International School (UNIS).

He spent his childhood in Ibaraki and his childhood in Geneva, Switzerland, and Saga, Japan. He traveled around the world and experienced many different cultures. He is currently living and attending high school in New York, USA. He is interested in fields such as software and is taking computer science classes, which are electives in high school. He also plays percussion instruments in the school's wind ensemble and jazz band. Last year he was trusted in the orchestra and won the "Douglas Fairchild Music Award". He also contributes to several student-led clubs at school, such as being a president of the Junior United Nations of Calligraphy (JUNOC), the vice president of the Computer Science Club (CSC), the publicity manager of the UNISVerse, and the co-president of Japanese Cultural Club (JCC). He is also focusing on club activities with the co-manager of (JCC). He learned piano and Go from the latter half of elementary school to the first half of junior high school, and for Go, he participated in three national tournaments in Japan as a representative of the team competition of Saga Prefecture.