Since entering high school, Kyou Nukui has not attended a single class. Instead, he spends his days locked in his bedroom composing music and posting it on the internet accompanied by his only friend's drawings, an artist with the pseudonym Kiriyume. One day, Kyou hesitantly uploads his newest composition, and first departure from his typical style, TR03. Additionally, he does not upload under his usual handle HibikiP, but simply under the name me, and without a drawing from his mysterious friend. Shortly after, Kyou receives a very polite email, not only praising his music but also somehow discerning that he is, in fact, the composer behind TR03. The e-mail also asks for a meetup in a nearby park, to which he cautiously decides to go. To his surprise, however, he finds three elementary school girls at the meeting place! Suddenly, Jun Gotou, Nozomi Momijidani, and Sora Kaneshiro ask for his help to hold a concert in their home, an old church now used as an orphanage. And though Kyou is reluctant at first, after seeing their musical abilities, he eventually decides to accept their proposal. Based on the light novel of the same name by the award-winning Sagu Aoyama, Tenshi no 3P! follows Kyou as these three angels change his life.

Loudmouthed martial artist Junpei Ryuzouji, elegant actress Airi Komiyama, and cheery but artillery-obsessed student Ritsuko Inoue all find themselves transported from their homeland of Japan to an unfamiliar, magical world. When the elven priestess Celcia Marieclaire casts the spell to send them home, she is interrupted, and the spell is broken into parts that scatter throughout the world. The spell fragments imprint themselves onto the skin of various elves. The trio travels in Ritsuko's tank, searching for elves who might carry the spell fragments so that Celcia can transfer them to her own body and make the spell whole again. As they adventure, people begin to refer to them as Those Who Hunt Elves, gaining a reputation as warriors that put a stop to evil-doers with their miraculous cannon, terrifying elves by stripping any that they find. Though they're not the smartest group, they make up for it with enthusiasm and their strong determination to get back to Japan.

Onmyoudou magic was once a powerful technique used by the Japanese during the second World War in order for them to gain the upper hand and establish their nation as a formidable force. But Japan was quickly defeated after the revered onmyouji Yakou Tsuchimikado caused the Great Spiritual Disaster, an event which plagues Tokyo to this very day. As a result of this mishap, the Onmyou Agency was established in order to exorcise further spiritual disasters and combat the demons that would make their way into the world. Now, Onmyoudou has become far more modern, simplified, and refined for use in a wide variety of applications such as medicine and technology. However, not everyone is able to utilize the magic, as is the case with Harutora, a member of the Tsuchimikado's branch family. Despite an old promise to protect Natsume, the heir of the Tsuchimikado's main family and Yakou's supposed reincarnation, as her familiar, Harutora has no talent and chooses to live a normal life instead. But when a prominent member of the Onmyou Agency attempts to recreate the same experiment which led to Japan's downfall, he decides to make good on his word and fight by Natsume's side.

Living amongst the rest of humanity, there is a small number of people known as Attractors that possess strange powers. Fearful of these dangerous mutations, a highly secretive organization named Custos uses cyborgs from a group called WTOC to exterminate Attractors before they can injure anyone or disrupt the social order. Conversely, inside the theme park Fantasium Garden, there is a hidden group of Attractors who want to save their people from being eradicated by Custos. Led by the ever-optimistic Quon Mitsuchi, the Attractors take on intense fights against Custos's WTOC in the hopes of protecting the existence of their kind.