Rapid Monster, the Bulletproof Boys' leader, released his first mix tape . The rap monster released a new song with a collaboration with G-funk legend Warren G, and released MFBTY (Thai JK, Yoon Mi-rae, and Beji) And is participating in a new album.

The rap monster's mix tape "RM" released on March 20 is composed of 11 tracks in total. Krizz Kaliko, a member of Strange Music, headed by famous American rapper Tech N9ne, as well as , the main track on the 14th premiere and Mix Tape, ) Participated and many other tracks.