ECHO is the newest, hottest idol boy group in Korea. All alphas. Well…except for Y/n. Y/N was an omega. But hiding it. In the idol industry, scent blockers were a godsend. It means Y/N could hide his designation and not get caught. ECHO was a 4 person boy group. Jae, a hotheaded alpha, lead rapper. Y/N, Lead vocalist and visual, the cute one. Minsu, charismatic and handsome, Dance lead. And lastly, the maknae of the group, Joon, an all rounder.