Himeko Kurusugawa and Chikane Himemiya are two high-school girls at the prestigious Ototachibana Academy in the fictional Japanese village of Mahoroba. They are also the reincarnations of the solar and lunar mikos. When their ancient enemy the Orochi (the eight-headed Yamata no Orochi of Japanese folklore) rises once more the girls’ long-sealed personas awaken to defend the world!

'Kannazuki no Miko' Spin-off Manga and 4th alternate reincarnation of Himeko and Chikane.

Kannazuki No Miko - 1st alternate reincarnation
Kyoushiro To Towa No Sora - 2nd alternate reincarnation
Zettai Shoujo Seiiki Amnesian - 3rd alternate reincarnation

Two girls, Kurusugawa Himeko and Himemiya Chikane, who have a close friendship that is secret from their classmates, are suddenly confronted with their fate to be the Priestesses of the Sun and the Moon. When an ominous lunar eclipse occurs on their shared birthday, they are forced into a pitched battle against Orochi and his forces, who wish for the total annihilation of the planet.

But it's not quite that simple. Himeko has feelings for Chikane--and for one of the Orochi's "Necks," Oogami Souma, who somehow has the ability to resist the call of darkness, though not without cost. What will happen as these people learn to live their predestined roles?

From Minna-scan:

This is a story about a Kuu, who is thinking about her prince all the time, she has dreams of him all the time, of him telling her to come with him. One day, as she goes back to school, she meets with someone who looks like him. Before long, the story gets complicated with mechas and stuff--what will become of Kuu?

From Sweet Love:

It was her 16th birthday when Kurusu's classmate, Ogami, confessed to her. She’s delighted, but also feels very uncomfortable in relation to her friend Kiraha, whom she knows has a soft spot for this guy. But Kurusu doesn’t have any time to rejoice, because mysterious evil creatures suddenly appear and attack her!! Kurusu must face her destiny along with Ogami, whose role is to protect her. However, they can't tell Kiraha about the situation.

An alternate universe story starring the yuri couple of "Kannazuki no Miko" and "Kyoushiro no Towa no Sora" fame, Chikane and Himeko.

In this series Himeko is a nun who leds a peaceful but lonely life, having lost both her parents and her beloved older sister.

One day she finds a girl hung inside the church, impaled by a sword. The girl, who strongly resembles Himeko's dead sister, is still alive and calls Himeko's name. She reveals that her name is Chikane, but she has a memory loss about everything else.

From that moment, Himeko starts to be targeted by a group of people who want to obtain the "Dragon Cry", which is said to be hidden inside her body. Chikane (after trying to know Himeko "more intimately") vows to protect her.

From Cidsa:
A spaceship lands on a bathhouse which belongs to Kazuto's family. Inside is Princess Warukure (Valkyrie) who gives part of her soul to Kazuto to save him from death (caused by her crash).

Since she only has half of her soul, she turns into her child self. Now Kazuto and company must figure out how to fix the bathhouse and change Warukure back to normal.

Itsuki and Hayato, two brothers who grew up in a village nestled deep in the mountains, set out to hunt down a wolf that has been attacking the livestock of the village. Itsuki is about to go in for the kill when a gigantic beast appears out of nowhere, snatching up the wolf in its jaws and sucking the life out of it. The beast that stared Itsuki down was a gargantuan, blood-sucking vampire deer… Will the two brothers be able to return to the village alive?! Find out in this blood-filled action-packed story by extraordinary mangaka Kaishaku!