Hitomi can understand Gaean (presumably because of her possession of the Atlantean pendant).
Yukari's reaction af she interrupts Hitomi's somber moment with Amano in the school infirmary. Hitomi will realize towards the end of the series that her best friend's in love with Amano.
For Hitomi, obviously, as an ordinary high school student about to become trapped in another world.
In a way, it's also arguably one for Van as well. What was meant to be a final rite of passage to become Fanelia's King instead brings him into contact with the legendary Mystic Moon — and a girl who will change the course of his life.
Sacred First Kiss: The terms of the track wager Hitomi strikes with Amano.