HIZAGUTYA (beatmaker / rapper) and An Denshi (beatmaker / rapper), who move to Tokyo from Nagano Prefecture and devote themselves to music production, meet Taishi as Young Ham (DJ / rapper), who is active in Tokyo's downtown area, by chance on the street one day. Based in Ueno and Yushima, the three pursue originality and continue daily training, and in 2023 they create a new genre called "KUROJI."