Yoshimura Sumimura comes from a long line of "Kekkaishi," individuals who have supernatural abilities and are able to destroy evil creatures called Ayakashi that venture into the human realm from time to time. The Ayakashi are demons that look to feast on the power emanating from the land of Karasumori, which also happens to be where Yoshimura's high school is located. Now, Yoshimura must fight to protect his beloved school and hometown. Although, if it were up to him, he would rather be baking cakes than fighting off the ugly characters that show up at night. Thankfully, Yoshimura isn't the only one helping to keep the baddies at bay. His childhood friend and neighbor, Tokine Yukimura, joins him in this righteous battle. Despite the fact that they are from rival clans, these two make a fantastic team. And teamwork is something vital to fighting the evil that is closing in, as the Ayakashi attack in waves, looking to claim the land as their own, and a shadowy organization looks on, ready to pounce when the time is right...

Ten years ago, a fairy by the name of Daisy appeared and asked the child Eiji Hoshimiya what his one and only wish was. Although his wish remains a mystery, the consequences were catastrophic. In an event called the "Great Destruction," the world started to fall apart as everything collapsed and countless people died. Now, Eiji is a high school student whose only concern is his sick sister. He does not remember what he wished for; all that he remembers is that his wish caused the Great Destruction. In the years since that event, thousands of other people have also received abilities to make their heart's desire come true. These people called "Orders" are believed to be evil and are hated by the general public. However, some of these Orders are after Eiji's life in vengeance for those that he killed. Will Eiji be able to survive the numerous assassination attempts? And the biggest mystery of all: what did he wish for, and what were his intentions in wishing for something that caused so much desolation? [Written by MAL Rewrite]

After inheriting the company from their parents, siblings Yuuhi and Yuamu Oudou have started to work at Ultraterrestrial Trouble Solutions, an organization that hunts aliens. Although they have never encountered aliens before, Yuuhi is desperate to meet one as he believes that an alien has stolen his important item called the "Earthdamar." One day, while searching for extraterrestrial creatures, Yuuhi and Yuamu find a strange spot in the forest where many trees have fallen, forming a scenery similar to a crop circle. As they venture further, they discover a mysterious spaceship and enter it out of curiosity. To their surprise, they come across Yudias Velgear, an alien from the Velgear Star Cluster. As it turns out, Yudias is seeking to learn about Rush Duel—a card game popular among elementary school students—as he believes that it will save his home from a long war. With the siblings agreeing to teach Yudias about Rush Duel, they eventually realize that their first contact with an alien may not be a random coincidence.

Gorou Honda, a little boy obsessed with baseball, has always admired his father, Shigeharu. Wishing to follow in his father's footsteps, Gorou dreams of becoming a professional baseball player. In turn, his son's starry-eyed admiration encourages Shigeharu to keep persevering, despite his late wife's death and his unsatisfying position on the second-string team Blue Ocean. Unfortunately, an elbow injury forces Shigeharu off the team, and he falls into despair. However, after an offhand joke from his childhood friend, Shigeharu reevaluates his choices and decides to keep playing, leaving behind his prime position as pitcher and taking up the bat. Now motivated more than ever, Gorou works hard to carve his way in the Japanese Little League. [Written by MAL Rewrite]