Overlord manga volume 4 features story by Kugane Maruyama and Satoshi Oshio plus art by Hugin Miyama and So-Bin.

Bloodlust is in the air and plenty of real blood too! Shalltear is on the hunt, and she may not like what she finds. Ainz sent her out for information, but when Blood Frenzy activates, the time for talk is over. Can anyone, undead or alive, stop her?