Painted in red, the word VON is all that is left behind after a terrorist attack on a nuclear facility in Japan. The government is shattered by their inability to act, and the police are left frantically searching for ways to crack down the perpetrators. The public are clueless—until, six months later, a strange video makes its way onto the internet. In it, two teenage boys who identify themselves only as Sphinx directly challenge the police, threatening to cause destruction and mayhem across Tokyo. Unable to stop the mass panic quickly spreading through the city and desperate for any leads in their investigation, the police struggle to act effectively against these terrorists, with Detective Kenjirou Shibazaki caught in the middle of it all. Zankyou no Terror tells the story of Nine and Twelve, the two boys behind the masked figures of Sphinx. They should not exist, yet they stand strong in a world of deception and secrets while they make the city fall around them, all in the hopes of burying their own tragic truth.

Yoshino Takigawa, an ordinary teenager, is secretly dating his best friend Mahiro Fuwa's younger sister, Aika. But when 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. However, the witch has been banished to a deserted island due to infighting within her clan. Hakaze's brother, Samon, selfishly desires to make use of the Tree of Exodus' power, in spite of both his sister's opposition and the impending peril to the world. With Hakaze out of the picture, it is now up to Yoshino and Mahiro to help her save the world, all while inching ever closer to the truth behind Aika's death.

The series follows Arashi and his Wild Liger. The main antagonists are the Death Metal Empire, lead by Gallagher. They use Zoids for conquest, and have at their command many Zoids and warriors, including the Four Heavenly Kings. Arashi longs to follow his father's footsteps become a Zoid Hunter, and find his ultimate Partner. At the beginning of his journey, he partners up with the Wild Liger and meets Bacon and Team Supreme, who tell him about the Great Ancient Treasure Z. (Source: Zoids Wiki)

Love is blooming at Sakuragaoka High School. Natsuki Enomoto has finally mustered the courage to confess to her childhood friend, Yuu Setoguchi. However, in the final moments of her confession, an embarrassed Natsuki passes it off as a practice confession. Oblivious to her true feelings and struggling with his own, Yuu promises to support Natsuki in her quest for love. While Natsuki deals with her failed confession, fellow classmate Koyuki Ayase struggles with his own feelings for Natsuki. Despite his timidness, he is determined to win over her heart. Zutto Mae Kara Suki deshita.: Kokuhaku Jikkou Iinkai follows Natsuki as she dreams of one day ending her practices and genuinely confessing to Yuu. Meanwhile, close friends also find themselves entangled in their own webs of unrequited love and unspoken affections.