Overlord, Vol. 4 (manga) (Overlord Manga, 4)

Bloodlust is in the air--and plenty of real blood too! Shalltear is on the hunt, but 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, put an end to her reign of terror...?