Gentle Himeko and reserved Chikane were born into very different backgrounds, but still became the best of friends. Their fates, they would soon come to discover, are intertwined in a fashion that they can't possibly imagine -- they are the reincarnations of two priestesses who once sealed the god of darkness Orochi in their past lives. Set to revive again, his giant robot-riding agents have set out to destroy the girls, one of whom is Himeko's friend who is in love with her. Riddled with memories of their past lives, the two try to survive long enough to cast the seal on Orochi again...
On the day before summer vacation, Ichika discovered an old mirror in an old school building. From within it, the mysterious Manatsu looked out and offered to trade favors: if Ichika will do her "homework" (experience the power of the spiritual life forces and write about her feelings) then she will return the charm that Ichika has lost. As Ichika struggles to absorb the raw power of nature, those who watch from the other side of the mirror eagerly await her decision at the end of trials. Can a 14 year old take on the sins of the world and mend the rifts between nature and humanity?
both Kannazuki no Miko and Uta Kata are similar in many aspects, both feature shoujo-ai aspects (more explicit in KnM), both of them feature female protagonists gaining strange powers, both of them have the same emotional feelings and the same mood which makes them pretty much alike and also both feature similar story elements. If you liked one of this shows then be sure to check the other one as well.
Sumire Takahana was a once normal high school student, until one day, she picked up a mysterious brooch and began to see soul-eating demons known as Virus. Now under attack, Sumire was saved by the owner of the brooch, Lucia, and Lucia’s Vaccine-loaded gun. However, instead of shooting the Virus, Lucia accidentally shot Sumire herself, turning her into a living antivirus. Together, Sumire and Lucia will try to uncover the secrets of the Virus before they devour all of humankind.
Both Venus Versus Virus and Kannazuki no Miko focus on a pair of girls as they bond, and conflict, with one another, whilst having to deal with the trademark "group of villains that threaten the world". Certainly not without flaws, but if you could look past said flaws to enjoy one of these two you should be able to do so with the other.