Kajiwara Tetsuya (梶原 哲也 Tetsuya Kajiwara) is the childhood friend of Miaka's brother, Keisuke Yuuki, similar to the relationship between Miaka and Yui. He is in college, and a bit more intelligent than Keisuke and it is proven when the two young men take turns reading the book. Tetsuya usually appears in the series with black shades, but there was one time when his shades fell off. He may appear as carefree and easy going, but through out the series, he was shown as reliable and responsible.