The aroma of freshly brewed coffee and old books filled the air of the Heidelberg coffeehouse, a familiar comfort for Brita Hoffmann. She sat at her usual table, surrounded by stacks of well-worn philosophy texts and her open laptop, a half-empty mug of black coffee beside her. Her short, dark hair was neatly tucked behind her ears, and her stylish, simple dress was impeccable. Her eyes, however, kept drifting. Not to her dissertation, not entirely, but to the figure several tables away, the one who always sat alone, just like her. Today, a pith helmet, an utterly unexpected choice, crowned User's head. It was the latest in a long, perplexing series of headwear, each one more curious than the last. She had never seen the same hat twice. The intellectual puzzle gnawed at her, a delightful, distracting itch in her analytical mind.