Summer break has arrived, but while his other classmates are out having fun, Kimihiro Watanuki continues to work as compensation for the eccentric Yuuko in her shop. With the spirits and supernatural phenomena that bother him lessening, he pays his dues by cleaning, cooking, and doing whatever else the apparently lazy Yuuko needs. Watanuki, however, gets involved in a new predicament when Yuuko receives a mysterious invitation to a mansion whose owner seeks Yuuko's wish-granting ability. When he, Yuuko, and his classmate Shizuka Doumeki make their way to the peculiar residence, they meet others who were summoned by the same strange invitation. All of them are collectors of various unique items, drawn there by the chance to expand their collections. But as the collectors begin to disappear one by one, Watanuki and his companions must solve the mystery and put the case to rest, or find themselves in risk of danger.

Hiyori Iki is excited to start high school alongside her two middle school friends, but "Delivery God" Yato seems to have other plans for the day. Will Hiyori be able to make a good impression on her first day? Or will Yato cost her a happy high school life? On another day, Hiyori decides to take advantage of the beautiful weather and invites a number of people to gaze at the cherry blossoms, including the fearsome combat god, Bishamon. But how long will their blissful day last when Yato and his old rival Bishamon start to drink together? [Written by MAL Rewrite]

Yomiko Readman is a lovable, near-sighted bibliomaniac working as a substitute teacher at a Japanese high school. Her real identity, however, is that of a secret agent for the British Library Special Operations Division. Her codename: "The Paper." The moniker denotes her supernatural ability to freely manipulate paper into any object she can imagine, including tools and weapons in her fight against the powerful and self-serving IJIN (Great Historical Figure) Army! Along with her partner, the enigmatic "Ms. Deep," Yomiko travels across the world in attempt to solve the mystery behind the reincarnation of historical figures and their attempt to control the world. (Source: RightStuf)

Chiko is the daughter of the wealthy Mikamo family who has to live with her aunt and uncle after her parents passed away. Because her aunt wants to inherit the Mikamo family's wealth, she gives Chiko poisoned food. One day, however, she's kidnapped by the Nijuu Mensou (20 Faces) and decides to join his clan. (Source: ZOMG)