Taniguchi is comically lascivious he gave a 039score039 of attractiveness to each firstyear girl based upon his tastes and preferences. He remembers the full names of everyone receiving an 039A039 rank with Nagato receiving an A. As for Mikuru her mere presence elicits an altered state of adoration for Taniguchi and Kunikida especially when she was in her sobaserving costume. He also knew Haruhi from back in junior high and was Kyon039s original source of information on Haruhi before he started conversing with her. It is hinted that he may have been the person that dated Haruhi for the shortest amount of time. From Wikipedia