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?

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

Kyoshiro to Towa no Sora revolves around the life of Kuu Shiratori, a seemingly normal high school girl who enjoys her school life in the giant city Academia, which is thought of as a symbol of recovery for humanity since already ten years have passed since the greatest disaster mankind had ever seen, occurred. Kuu has recently been having a recurring dream where a prince meets her and takes her away. One day, while all the students at her school are preparing for the upcoming school festival, the prince, whom she has met several times in her dreams, appears. The prince, Kyoshiro Ayanokoji, requests of her just as he had done in Kuu's dreams, "Let's go... together..."
(Source: Wikipedia)

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!

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!

Kaishaku's new work with alternate characters related to their characters from their other works such as "Chikane" and "Himeko" from "Kannazuki no Miko" and "Kaon" and "Himiko" from Kyoshiro to Towa no Sora. An all-new, original story.
In this series Himeko is a nun who leads 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.