Yakusai-hen (The Calamity Arc) covers the second half of Season 4.
(also known as Yakusai-hen Episode 2) titled " Morgue " focuses on the desperate survival of Bell and Ryuu on the 37th floor while the rest of the party faces a catastrophic threat on the 25th floor. 🦴 Survival on the 37th Floor (The Deep Floors) Danmachi IV: Fuka Shou - Yakusai-hen Episodio 2
The duo is hunted by "Skull Sheep," terrifying monsters that use darkness and camouflage to ambush prey. 🌊 Crisis at the Great Falls (Floor 25) Yakusai-hen (The Calamity Arc) covers the second half
Ryuu allows Bell only five minutes to rest, emphasizing that stopping for longer in the Deep Floors means certain death. 🌊 Crisis at the Great Falls (Floor 25)
The Dungeon triggers an irregular event, spawning the two-headed dragon Amphisbaena out of order to attack the Hestia Familia expedition party.