In 2014 KOHH released his major 2nd studio album titled MONOCHROME. The album was a fair success among the urban acts and its lead track "I don't mind if I'm poor" (Japanese: 貧乏なんて気にしない Hepburn: Binbō nante Kinishinai) had a big reception on YouTube.
In 2015, KOHH along with Japanese artist Loota collaborated with Keith Ape's track "잊지마" (It G Ma) which became a major hit single in Japan and South Korea apart from gaining international media attention.[4] Back in Japan, KOHH resumed his work and continued working on his new album DIRT after releasing his delayed 1st album 梔子 (Gardenia). DIRT was released on October 28. The album was also released internationally via iTunes in October 23. KOHH was featured along with OG Maco on the track "BUCHIAGARI" by Japanese DJ RYOW.
In 2016, KOHH collaborated with Frank Ocean on the single "Nikes", available on the physical album copy of Blonde. KOHH was featured in a new song from Japanese American superstar Hikaru Utada, titled "Bōkyaku", from her 6th Japanese album Fantôme. KOHH was featured in an exclusive bonus track "Runway", in the Japanese iTunes version of Mariah Carey's Caution album.
KOHH's fifth studio album Untitled was released by Nippon Columbia on February 2, 2019.