17 April 2009: ani-nouto mystery desu
I vote Todai. [Update: It wasn't Todai. That was a completely wild guess on my part; I'm not actually sure how to go about finding places. On the other hand, anime teaches us that if you're looking for people: students will be on the school rooftop, students who secretly want to sleep with you will be in abandoned classrooms or deserted club rooms, and anyone else will be at the river.]