This first entry in the Angel Core series follows a young soldier (fighting for a fictional, futuristic empire) as he's transferred to a secret military installation, where's he surprised to discover that his new job will be having sex with gorgeous young "Angels," a group of genetically unique women who need regular intercourse to nurture their powers.

Story begins as Momiji's chastity is taken by Kazuto. We learn that Momiji is a girl without a will of her own, while Kazuto is the son of a wealthy and influential family. Kazuto took an interest in Momiji when he saw her at school, and he went out of his way to get her to come live in his house as a maid. (Source: ANN)

Based on a game by Alice Soft. Two large countries, Leben and Carnea, had been ruled by the kings who were men of character, and people in these countries had been living peacefully. However, Leben suddenly intruded into Carnea, and the two countries began to war. The even fights had continued for more than six months, but when the king of Carnea died of illness, gradually Leben got the better of Carnea. In these days, a man in a black suit visited Carnea. He had been a vice leader of the Carnea Knights, Claude, who had suddenly disappeared eight years before. His appearance had changed completely, and that made them suspicious. But when he said he had a plan to beat Leben, they gave their ears to him. He said that they would hire experienced mercenary solders, and that the queen and princesses would sell their bodies to earn money. The queen and her daughter accepted his plan, and they began to take his "lessons". (Source: AnimeNFO)

Based on a live-action adult movie by DEEP'S. Ryoka University Hospital is a prestigious medical center consisting solely of women. At night, the hospital begins a special type of treatment meant only for VIPs.