Hell Girl Vol 5

From the Del Rey Manga edition

An Ai for an Eye whether you wish to protect yourself, your newborn, an unrequited love, or a sick sibling, the Hell Girl can help destroy anyone who threatens you. If you're holding a grudge, Ai Enma offers a unique - and deadly - bargain. But the price is dear: Both the grudge-holders and those they curse are eternally damned.

Source: Anime News Network Encyclopedia