Akhu in the Egyptian concept of the Soul, which is the immortal part, the radiant and shining being, that lived on in the Sahu, the intellect, will and intentions of the deceased that transfigured death and ascended to the heavens to live with the gods or the imperishishable stars. The Akhu came into being after the deceased passed judgment after death, and the Ka and Ba united.
In "The Witness of the Stars," by E.W. Bullinger, page 58 "In the Zodiac of Denderah we have (Ophiuchus) a throned human figure, called Api-bau, the chief who cometh. He has a hawk’s head to show that he is the enemy of the serpent, which is called Khu, and means ruled or enemy."
As seen on Grand Temple Decan 23 which is called Akhouy, Akhwey, Tepi-a Akhwey, or KhuKhu,
the first two are the ibis bird sign, Egypt. Akh,
and then the \\, i, double ii or y, ouy is used.
The hieroglyph for a Ibis is .
Cyril Fagan comments, "In the decan lists from Asyut, three pentades which ended Aries and commenced Taurus were known to the Egyptians as 3hwy (Akhuy), the 'shining ones,' because about the Pyramidic period, the sun rose in one or the other of them on New Years's Day of the lunar calendar. In other words, they marked the place of the vernal equinox, Taurus 2767 B.C. The feminine form of Akhu (Akh, Khu, Ikhu) namely Akhot, means the 'place of sunrise,' or the Ascendant."
As seen on "http://home.main.rr.com/imyunnut/Den.Round.html" by Joanne Conman, "Akhwey," which means "The Two Akh-Spirits." She also refers to it by the name "Tepi-a Akhwey," and claims it means "The One Preceding the Two Akh-Spirits."
The question here is: 'Who are the Akh spirits?'
Are they the hour deities on the Grand Temple square zodiac?
Or are they the Denderah Decans of the round zodiac?
As you have read above the Akhu encompasses the Egyptian concept of the soul.