Heian Koi Emaki: Ayanashi no Kimi

In Heian era, the world is full of mysterious things. The heroine, Itsuki, has a special power to purify the souls of evil spirits and send them to the afterlife. For that, she must liaise with the ghosts and purify them with a kiss. However, Katsuragi-sama, who is both her mentor and foster father, tells her, "Do not exchange a kiss with living beings."

One day, a letter from a childhood friend who trains faraway arrives. Death isn't the end, romantic Heian stories depicting immortal feelings!

(Source: Kadokawa, translated)