Did a little research. "Agrat Bat Mahlat, also known as Igrat or Ryukia Zerizion, is a demon and succubus in Jewish mythology and although female, is ranked as the king of the demons who takes the form of a beautiful woman that comes to men in their dreams to seduce them into sexual intercourse." What kind of summoning ritual was Patchy DOING.
"The result is a devastating reversal of power between the strongest and weakest and everyone in between" wait, but that's what seija wanted in ddc....
While this game didn't come out until some years after DDC, the concept was apparently created prior to DDC's release. So yeah, two very good games with similar story themes.
Don't you just love the LoT reference on Rinnosuke's dialogue and cards? Though I do admit Start of Heavenly Demise and World Shaking Military Rule did trigger my PTSD from that fight >_>