Cow Succubus

The Cow Succubus is the second optional encounter in the Underground Grove. She has a rather naive personality, for despite being a succubus, she is a rare case of a 'good spirit' being reborn into a demon. Consequently, she is the only succubus that can actually be spared. If the player chooses this option after winning the fight, she will step into a portal, where her fate remains unknown. It is possible she will be searching for the Lunar Clan, as the player advises her to do so.

Strategy
The Cow Succubus is particularly strong against physical attacks, and particularly weak against magic attacks. This fight is very easy so long as you focus on magical attacks.