In 1995, while studying at the Japan Institute of the Moving Image, Masuno formed the comedy duo known as Bakarhythm with Toshihiro Matsushita.
However, Bakarhythm feared that the overuse of the same joke and gag may potentially lead to him becoming a one-hit wonder, and promptly stopped performing the flip board neta just one year after its initial break to popularity.
His neta, "Baka the Geography Teacher" scored a perfect 100 points at the 2009 R-1 Grand Prix, the first in the competition's history.
Bakarhythm's career as a screenwriter then flourished as he was in charge of the script and screenwriting for prime time television dramas such as Kamoshiranai Joyu-tachi, Sakurazakabe Monogatari, the 2016 drama version of Ten Dark Women, Sumu Sumu (In which he also starred in), and Kaku OL Nikki (Also its original creator and lead actor).
[5] In 2014, he appeared wearing a fake long nose and blonde wig in a controversial whiteface commercial for All Nippon Airways.