When Jasy Whistles

 is a Fantasy Webtoon Original created by Cibeles; it updates every Thursday.

Synopsis
''In ancient times, people believed that the forests of Paraguay were filled with gods and monsters. Growing up outside of modern Asuncion, Hela never thought much of the old stories. When her best friend disappears, apparently kidnapped by the legendary Jasy Jatere, however, she learns that the old world is not as dead as she had thought.''