Ayakashi in Hi Jo Yokoshima Oni Seibai Kakioroshi Chohen Jidai Shosetsu (Kosu Mikku Jidai Bunko)

[Machine Translation] Koshiro Minazuki was adopted into the family of a 500 koku barn head from a fourth son who lived in a room. Koshiro looked around the house that had become his home and entered the storehouse, where he found a hanging scroll depicting a beautiful girl of the highest caliber. Koshiro was so intrigued by the girl in the painting that he unintentionally touched the scroll, but a moment later, the girl in the painting became a reality.... The girl, who called herself Ayaka, was an ayakashi (an illusionist) who had been sealed in a hanging scroll. She is said to be in charge of lewdness and to grant various powers to those who become her masters. One day, Koshiro rescued Izumi, the daughter of the head of the Hyakunin clan, who was being teased by a drunken man. Despite their mistaken identities, the two are quickly engaged in a marriage ceremony...

部屋住みの四男坊から五百石の納戸頭の家に養子に入った皆月小四郎。我が家となった屋敷を見て回り、土蔵に入った小四郎は、そこで絶世の美少女が描かれた掛け軸を見つけた。絵姿の少女にそそられ、思わず手すさびをしてしまった小四郎だが、その刹那、絵の中の少女は現実のものに...。綾香と名乗った少女は、掛け軸に封じ込められていたあやかし。淫気をつかさどり、主人となった人間に様々な力を与えてくれるという。ある日、酔漢にからまれていた百人組頭の娘・和泉を助けた小四郎。妖しの力によって小四郎の虜になった彼女と、身分違いにもかかわらず、とんとん拍子に婚儀の話が持ち上がって...。