Harukanaru Toki no Naka de: Maihitoyo

After the protagonist arrives in the imperial capital and acquires the power to seal vengeful spirits, the Imperial Palace becomes overtaken by curses. Court protocol requires the protagonist to address the problem alone — no companions. Early attempts to purify the Palace fail, and the court nobility respond with hostility toward the protagonist's methods and origins. At a low point, a mysterious young man appears and provides exactly the guidance she needs. Once reunited with her companions, the full objective becomes clear: eliminate the Demon Clan's hold on the Imperial Palace, the spiritual center of the capital.