Isei finds new troubles about to enter into his life and two even sleeping in his bed. While looking at an old photo album of Isei's, Kiba sees a familiar sword being held by an old friend of Isei's, which reopen's old wounds. Meanwhile, Devils, Fallen Angels, and The Church's agents all clash to get their hands on, or just destroy, powerful weapons called Holy Swords. If that weren't enough, Isei's red dragon warns him that he senses his old rival the white dragon is drawing near.
The story follows Issei Hyōdō, a dim-witted, lecherous second-year high school student who is killed by a girl on his first date ever. Issei is reincarnated as a devil, and from that day forward, he serves as an underling of Riasu, a high-level devil who is also the prettiest girl on Issei's campus.
Ayumu Aikawa must continue to fight the Megalo in place of Haruna, who continues to recharge her magical powers. While trying to figure out the mysteries behind the people who are releasing these Megalo in the world, Ayumu meets a beautiful, black-haired girl by chance, and she only has eyes... For his butt.
Based off the Japanese folktale "Momotaro", a girl named Momoko was born inside a giant peach. She was adopted by an old couple and grew up to be a voluptuous teen. Her three friends are animal Gods Inukami (dog), Sarukami (monkey), and Kijigami (pheasant); she has the ability to fuse with any of them to become a powerful magical girl. One day Momoko's village is attacked by the demon king's army who are searching for fragments of a treasure used to protect the land. After defeating the demons Momoko embarks on an journey with her animal friends to search for the "peach fragments" before they fall into the wrong hands.
The story centers around Kanade Amakusa, a boy cursed with the mental power of "absolute multiple-choice" — a multiple-choice quiz will suddenly appear in his mind, and the choice he makes will become his reality. For example, he would have to choose between going nude from the waist up or the waist down in school. While in school, he is given another choice: 1) A beautiful girl will fall before him or 2) he will fall from the rooftop in female clothes. He chooses option 1, and a blonde girl named Chocolat falls before him.
As a child, Raku Ichijo made a secret promise with his childhood sweetheart, keeping a pendant as a memento while his love took the key. He dreams of one day meeting his past love, but years later, reality smashes his hopes when Chitoge Kirisaki accidentally knees him in the face. Though Raku's a normal high schooler, his family heads the notorious yakuza gang the Shuei-Gumi faction. And he's dragged into family affairs when he's forced into a relationship with Chitoge, the daughter of a rival gang's boss.
Kasuga Arata lived a normal life together with his childhood friend, Hijiri Kasuga, in a small town. However, everything changed on the day of the Black Sun, and a magus (mage) appeared before him. The Black Sun caused the Breakdown Phenomenon which destroyed the town where he lives. Because of this, his normal life was artificially reconstructed by a grimoire that his childhood friend had left. The appearance of the magus led him to a new life in the Royal Biblia Academy and meeting the members of the Trinity Seven.