The major power of the Evillious region, the Kingdom of Lucifenia. Ruling this vast country was the 14-year-old princess, Riliane. She used her absolute power to squeeze everything from the people, and anyone who defied her was beheaded without mercy.

In a certain kingdom, a prophecy was made about a child born with a birthmark on his back. It was said that he would bring an end to the kingdom, and that his death would bring about its destruction. When the twin prince and princess were born, Len and Rin, Len was discovered to have the birthmark. He was banished to a lonely tower, and Rin was raised as the only princess. However, it ended up being impossible to keep the siblings apart, and soon they formed a deep friendship. Although circumstances may pull them apart, nothing can break the bond they have with each other. They struggle together to survive the treacherous and dangerous world they were born into. This is their story. Based on the original Vocaloid songs "Aku no Musume" ("Daughter of Evil") and "Aku no Meshitsukai" ("Servant of Evil") by Akuno-P (mothy). The volume released in 2011 by CR COMICS DX never had a sequel. It seems to have been dropped or cancelled. In 2014 two volumes were released by Birds Comics Spica Collection which seems to conclude the story.

Based on the original song [Goumontou wa Nemuranai](http://vocadb.net/S/35617) by mothy. What do you do when you have lost everything? Lloyd Lowell has found his answer. In Leon City, people are drawn to the torture of tower, Torcia Tower. There, it is rumored, lies treasures which can bring you fortune, fame and, most importantly—eternal life. However, nothing goes as planned when Lloyd enters the tower…

In the rural and peaceful Belzenia-Asmodin Empire, women of all ranks, ages, and marital statuses have begun disappearing one after the other. All they have in common is that they are both beautiful and reputable. Where have the women disappeared to - and who will be targeted next? Based on the original Vocaloid song "Venomania Kou no Kyouki" (The Madness of Duke Venomania) by Akuno-P (mothy).