Yoshino Takigawa, an ordinary teenager, is secretly dating his best friend Mahiro's younger sister. But when his girlfriend Aika mysteriously dies, Mahiro disappears, vowing to find the one responsible and make them pay for murdering his beloved sister. Yoshino continues his life as usual and has not heard from Mahiro in a month—until he is confronted by a strange girl who holds him at gunpoint, and his best friend arrives in the nick of time to save him. Yoshino learns that Mahiro has enlisted the help of a witch named Hakaze Kusaribe to find Aika's killer and of the existence of an entity known as the "Tree of Exodus." The witch's brother selfishly desires to make use of its power, in spite of the impending peril to the world. However, Hakaze is banished to a deserted island, and it is now up to Yoshino and Mahiro to help her save the world, while inching ever closer to the truth behind Aika's death. [Written by MAL Rewrite]

In present times, Gods and Demons coexist together with Humans after the door between each of these worlds had opened. Tsuchimi Rin is a normal young high school student attending Verbena Academy, spending his days living peacefully with his childhood friend Kaede. Unexpectedly, one day the King of Gods, the King of Demons and their families move into be Rin's next door neighbors. Apparently the daughter of the Gods, Sia, and the daughter of the demons, Nerine, are both deeply in love with Rin after having met him in the past. Along with his playful friendship with upperclassmen Asa and his encounter with the silent but cute Primula, Rin has much on his hands dealing with the affections of each of these girls. Based on the eroge by Navel.

The balance of the world is deeply shaken when malevolent gods known as the Four Perils break their seals and disappear together with eight million minor deities. In the absence of gods, lands become barren and famine looms in the country of the Eight Immortals. In order to restore the fragile harmony, kashi—gifted dancers and singers—must hunt the missing gods in other realms, use their performance skills to charm the deities, and seal them using the power of their rosaries. Although a master dancer, Ichiyou is ridiculed by his peers for his lack of singing talent. Nonetheless, the young kashi is tasked by the Eight Immortals to bring back the Four Perils before the world plunges into complete chaos. Helped by his familiars Tenkou and Kaka, Ichiyou embarks on the perilous mission given to him, with his search leading him to modern-day Japan. If he hopes to save the world, Ichiyou must also uncover the truth behind the Four Perils' disappearance—but this event seems to be disturbingly intertwined with his own past.

In the year 2020, technology is everywhere. Every digital device around the world is connected by a singular network where data travels. Unbeknownst to humans, this network has become home to life forms known as "Digimon." Fifth-grader Taichi Yagami is preparing for summer camp when strange occurrences begin in Tokyo; certain electronic systems have started going haywire. When he discovers that his sister and mother are trapped on an unstoppable train, he rushes to the nearby station. Suddenly, Taichi is transported to another world where he meets a strange creature by the name of Agumon, who somehow already knows his name. Taichi also receives a strange device called a "Digivice," which allows him to communicate with the undigitized world. Taichi discovers he is in the "Network," and virus-like Digimon are attacking the areas that maintain Tokyo’s electronic systems. It is up to Taichi and his new partner Agumon to stop these cyberattacks before the whole world is threatened by the actions of mischievous Digimon.