ECHO

 is a Fantasy and Sci-fi Canvas Webtoon created by Hiseki; it is currently on an indefinite hiatus.

Synopsis
''In a world where the majority can manipulate sound, the strong are the ones who reign superior. Do you accept the role you're given or do you fight fate to become free?''

Related

 * Internet Idol Boyfriend: Same creator
 * Transported into AnotherWorld with My ToiletPowers: Same creator