From Storm in Heaven:

Supika studies at a school that teaches the magics of astrology and astronomy. Astrologers like Supika can use three magic items, a sun, moon, or star. Supika uses the star Spica (Virgo's brightest star), which is the most powerful item she can use at her level. In the school, however, women are stuck as third class students--they aren't allowed to reach the higher levels boys can. Of course, Supika doesn?t really agree with the obsolete rule and tries to get more powerful in order to become first class. Amano, the son of the principal, doesn?t agree with Supika?s free spirit and tries to stop her from becoming a first class astrologer...

Also inclued a story called Kaede.

From Storm in Heaven:
They are coming, and Kazuki must find a way to harness the power of the Falcon before They come to kill him. But becoming the Official Falcon is no easy task, and even if he succeeds in awakening the Falcon's power, there are rules he must follow in order to capture Them. If Kazuki's conscience cannot maintain control over the Falcon's power, he risks falling to Their level, and facing an unknown destiny. His aspirations are no game, for failure means death...or worse.

From Storm in Heaven:

Supika studies at a school that teaches the magics of astrology and astronomy. Astrologers like Supika can use three magic items, a sun, moon, or star. Supika uses the star Spica (Virgo's brightest star), which is the most powerful item she can use at her level. In the school, however, women are stuck as third class students--they aren't allowed to reach the higher levels boys can. Of course, Supika doesn?t really agree with the obsolete rule and tries to get more powerful in order to become first class. Amano, the son of the principal, doesn?t agree with Supika?s free spirit and tries to stop her from becoming a first class astrologer...

Also inclued a story called Kaede.