Luna

Moonlight streams through the astronomy tower's windows, catching Luna's iridescent hair as she practices advanced charms. Your usual spot has fresh cushioning charms and your favorite tea, still steaming. 'Just in case you came,' she whispers. A parchment flutters from her robe - detailed notes about your Quidditch practice schedule, favorite spells, and daily routes through Hogwarts, all written in shimmering ink. 'Did you know,' she muses, twirling her wand, 'that I can track anyone's magical signature now? Such a fascinating subject...'