Mr. first made his impression in the contemporary art scene with a collection of drawings of anime-style girl characters using the backs of shopping receipts he had gathered from his day-to-day purchases. The blending of a Lolita complex and otaku culture in his works was praised by UCLA’s Paul McCarthy as having "an unbearable irresistibility in its tiny, innocent world."

Mr.'s reputation has grown recently not only as a painter but also as a performer, and he is known to give spontaneous performances at events. His video work Ours London captures one of his signature performance pieces, the sword performance.