Kyuu first encountered Touya in Volume 2, when Aya was leaving his condo. Although she didn't say anything, her reaction was quite simple: *BLUSH*. Touya, however, probably didn't even notice her. From that point on, Kyuu has this silly crush on him, all because of his appearance. Sounds shallow, but it's just there for comic relief. Touya continually either does not pay attention to her, or forms the infamous sweatdrop.