I Want to Be a Receptionist in This Magical World. Vol. 7 (Manga)

Nunnally's no stranger to busy days and night shifts after being a receptionist for three years. But lately, her dreams have been plagued by something calling to her...No time for that now, though, because everything is abuzz as mages from all over the world gather in Doran for Walhelnus! Yet, out of all the mages in the world, a certain fiery fool still manages to show his face. And elsewhere, within the primordial flame's tomb Nunnally's parents were exploring-something sinister begins to stir...