-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 !! "

From Amazon.jp : 上手く授業ができず、悩み続けている高校の国語教師・小倉。そんな時、担任をしているクラスの生徒・黒田から助言をもらうことになって…？　生徒が先生で、先生が生徒なスイッチコメディ！

Lucia, a poor noblewoman raised to be the next lord, excels in sword and archery and has studied estate management. But her younger brother, born four years later, inherits the title. Determined to contribute to her family’s future, she chooses marriage as a means to support her domain. At a garden party, she heroically intervenes in an attack—but unwittingly draws the attention of Reinellio, the famously charming captain of the duke’s knight guard. He proposes a fake-relationship arrangement, and her supposed act of convenience turns into something more meaningful as she begins to understand the real man behind the rumors. https://www.cmoa.jp/title/328096/