Sin Knightray

One of the few new students who have a shin and he seems to be a rather promising ability bearer.
However, from time to time his way of acting towards others is really confusing.
Generally he keeps his disatnce, but in the case of certain people he becomes either really cold and rude or caring and overprotective (usually acts like that from the first time he meets them).
Sheryl falls into the later category, though she can'ts understand why...