A glance at the clock brought Shizuru stretching in her chair before standing, "Certainly not disputing your intelligence Stark." No sarcasm this time but, it took more than that to be a good teacher, but as she had never sat in one of his classes or even talked about him with one of his students so she couldn't make a good judgement call.
Reaching up to redo her very not dignified bun she gave him a genuine smile, "Appreciate the coffee and breakfast. Lunch. Food. Appreciate the food," She hadn't breakfast, so technically this was breakfast at lunch time, "But I have a lot of work to do on a project." As she finished tying off her hair she took a last big drink of coffee, "See you at the next dueling club or sooner, if you're lucky." Stark seemed like the person who could accept a little harmless flirting without taking it too far. Perhaps he was not quite as bad as she had first assumed him to be. Either way, she had more things to do today, though the break was nice.