From [MangaHelpers](https://www.mangaupdates.com/groups.html?id=1011): One sad day, Aiko finds herself working at the funeral of a boy she once liked. His wife preceded him in death, and he left behind a little boy. That little boy moves into the care of his older brother, an unkempt man that seems less than thrilled with the prospect of caring for a child. Aiko is concerned for the well-being of the kid so she inserts herself into the situation. It turns out that the child's new guardian, Karibe Kiyomi, is actually a popular mangaka. Few know this, however, because he writes his long-running shoujo manga under the pen name of "Karibe Mariko." In order to make sure the child is okay, Aiko agrees to an unusual deal with Kiyomi and his manager. She'll let them arrange her love life, in order to research situations for Kiyomi's manga. Does Aiko really understand what she's getting herself into? [tethysdust]

-Time is the middle of the Heian period. The story begins with an ominous prophecy sung by Seimei Abe, the onmyoji of the demon city of Heiankyo. "Oeyama, the headquarter of demons where hundreds of demons gather. According to Seimei, the gate of" Onijima "will soon open, and the seal of Oeyama will be lifted. At that time, the demons and sake that eat up Kyoto It is said that Tendouji will wake up. At the behest of Michicho Fujiwara, Tachibana Yukifusa runs to the mountain of Oe. What is the purpose of the woman who has come into contact with Gyobo? Can Gyobo stop the seal of Shuten-doji from being unsealed? And the mysterious word "Oejima" left by Seimei. What? A new legend of demon extermination is about to begin in the swirling capital of Kyoto !! "