Nukumizu Kazuhiko is an observer type. He describes himself as a supporting character. He often watches situations people find themselves in and wonders what he would do if he were in a similar scenario. One day, while eating at a restaurant, he notices his classmate, Yanami Anna, with her childhood friend. He realizes he is witnessing her confession of love being rejected in favor of another girl.
Seventeen-year-old Asamura Yuuta is a talented young boy. He lives alone with his father and often works evenings to save money for his future studies. One day, he learns that he will soon have a stepsister, as his father recently met a woman with whom he feels happy, and they are planning to live together soon. Although Yuuta is understanding, he isn't quite sure how to approach the subject of having a stepsister.
Oumae Kumiko starts her high school education with plans to join the wind instrument club. However, upon seeing that a former acquaintance from her previous school is also joining, she decides against it. The situation changes when her current classmates, Hazuki and Sapphire, express their desire to join as well. Influenced by them, Kumiko eventually overcomes her hesitation and declares her intent to sign up for the club.
Tomozaki Fumiya is the top player of the online game Attack Families, also known as Tackfam. Although he uncompromisingly maintains his ranking, his lack of social skills makes him struggle with everyday high school life. He rationalizes this by blaming the complex mechanics and unfair rules of the game of life.
Kazanari Tsubasa and Amou Kanade formed the legendary idol unit known as Zwei Wing. They use their songs to power ancient relics used as Symphogear to fight Noise - creatures of unknown origin against which conventional weapons do not work. Humans are familiar with the existence of the Noise, but knowledge of the Symphogear is kept strictly confidential. One day the Noise attack one of Zwei Wing's concerts.
From an early age, Aono Hajime admired his world-famous violinist father, who inspired him to take such a career path himself. However, after his parents divorce, he decides that he will never play the violin again and chooses an ordinary high school without an afterthought.
After the death of a younger sister and the divorce of his parents, Touno Kaoru is unable to find his place at home. After a harsh confrontation with his drunken father, he runs out of the house and discovers a mysterious tunnel. Confused by what he sees inside, he runs away, picking up a parrot along the way that looks identical to his long-dead pet.
Tachibana Arisu and several of her female colleagues are embarking on careers as professional idols. Their dream has just come true. They have been assigned a Producer to take care of them and take care of promotions. The girls' excitement leads them to heavily idealize his image in anticipation of their first meeting.
Sixteen-year-old Hoshino Ai is a talented and beautiful idol adored by her fans. She moves the hearts of large masses. She is the epitome of an innocent young girl possessing a personality that attracts like a magnet. Amemiya Gorou is a doctor at a hospital in the province and a big fan of Ai. So when the pregnant idol shows up at his hospital, he gets quite shocked.
Marin and her younger sister Urin are sea-dwelling people. One day they find a beautiful silver ring near their home. Marin, wanting to return it to its owner, takes the hesitant Urin with her to the surface world. She does this despite her knowledge of the legend of the turtle old man who left the bottom of the sea and never returned.
Aoba Riku has just changed schools because of his father's job. On the very first day, he realizes that this educational facility is quite different from the schools he previously attended. After all, this was not his first change of residence. The secretary controls the school and the teachers themselves are extremely eccentric individuals. Students enjoy the great freedoms that the Tsugumi High School authorities are proud of.
Ninomiya Shungo is an average high school student who lives at home with his older sister Ryouko. However, Shungo's life changes when a cute girl named Tsukimura Mayu arrives on his school grounds in a military helicopter. It turns out that Ryouko sent her, along with her older brother Mikihiro, to live in their home.