Finalists of "iCON Z - Dreams For Children", the largest audition in the history of LDH with over 48,000 participants, the four-member vocal and rap group includes Guilherme Massayuke Tomazi Nishimura and Hiroto Kutsuno who have participated since the second chapter of iCON, as well as Ryoji Sugiyama and Suzuki Higa (Higasuzuki), who are active as a members of the chorus group DEEP SQUAD.
The name WOLF HOWL HARMONY comes from "the overlapping stories of the members who were destined to come together like the howling of lone wolves".