Since ancient times, Japan has been home to beautiful demons with supernatural powers. When Otoha, a budding onmyoji, was a child, her mother was killed by a young red-haired demon, and she lost all memory of what happened before that. Otoha vows to repay the kindness of Tsukikage Touma, the head of the Onmyo Bureau, who took her in and raised her after she had lost her family, and to take revenge on the demons. One day, while pursuing a woman who resembled a demon, Otoha meets the beautiful demon leader, Homura. Otoha braces herself for her mother's enemy, but for some reason, Homura treats her sweetly and gently... (Source: Kadokawa, translated)

Akari was born into a special family whose bodily fluids are poisonous. After her parents died, she worked as a maid in her uncle's house, but she was mistreated because she was considered "creepy" for hiding the poison in her body. One day, Yuki, the wealthy owner of a large brothel, visits Akari's house. Yuki has prepared a huge sum of money and wants to take Akari as his wife, but he is hiding a secret...? (Source: Kodansha, translated)