WorldEnd: What Do You Do At The End of the World? Are You Busy? Will You Save Us? Novel Volume 5 is written by Akira Kareno with illustrations by Ue.

Willem didn't get a chance to keep his promise as he breaks the barrier of Chanteur, the First Beast Who Laments for the Moon. In the ensuing aftermath, a young Visitor is separated from her sky fish, Carmine Lake, and for now, she spends her time with a certain "Billem" whose memories have been sealed away. Elsewhere, the duty of fighting the dangers that threaten their home has fallen to Ithea and Rhantolk as Aurora, the Second Beast Who Pierces, comes ever closer to Regule Aire...