Nattawut was born and raised in Bangkok. Although he never had art classes when he was young, he developed a connection to art through his favorite comic books, Gundum and Dragon Ball. He started drawing characters from the books as his hobby. When he graduated from high school, he had a chance to meet his long-lost friend, who introduced Foremost to Ani Art Academy and the instruction of realistic art. He then moved from Bangkok to Koh Yao Noi to join the academy and develop his artistic skills.