Saku Otonomiya awakens to begin at a new school. Hinata Mitsutsuka is with his family as he leaves home to go meet Saku, having known him from middle school. Introduced to the class, Saku is seated near Kai Akizuki. During the school break Kai comes across Mike and helps him carry the books his is to transfer. Sosuke comes across Saku eating by himself. After visiting his sister in hospital Saku sings the 'Cloudy Day' song that Sosuke overhears. Meeting him again on the rooftop he and Uta want to write songs for Saku to sing.

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Sosuke proposes to Saku, who is working part-time at Curry Shop Volcano at the corner of the intersection of School District 7, that he should sing the lyrics inspired by Saku. Meanwhile, Kai Akizuki, Saku's classmate in the store and member of the archaeology department, offers to compete with Saku for curry during field work on the shore of the first school district. On the day of the event, Kai makes a full-fledged curry, but Saku decides to compete with the secret taste of his sister's direct transmission!

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Saku gradually expands his friendship by participating in fieldwork at the Archaeology Club. Hayoma Kuzuno, who belongs to the singing club, turns up the heat on Saku and scouts him, while Sosuke also suggests that if he does not join the singing club, he should team up with him and aim for a major debut, but Saku refuses both talks. The reason why he stubbornly refuses to enjoy his youth is because of the presence of his sister Nozomi, who was sentenced to 3 months ~ half a year to live.

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Sosuke follows Saku into the hospital and learns that he has an older sister who doesn't have much left to live. In such a desperate situation, the two begin to pursue the "urban legend of a white man who can cure anything" with a desire to grasp at straws. Involving members of the poetry, singing, and archaeology clubs, Saku and the others scramble around the country in search of white people. Eventually, they realized that this mysterious being was attracted to the song.

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Chikuma Marume is on his way to the archaeology club room when he receives a call from his friend Ho Shido, who tells him that he has found a ridiculous online game that allows him to explore a world that looks exactly like Tensho Gakuen in the form of a cute cat. Chiguma was surprised by the game, which allowed him to move freely around a world that seemed to be real, but at the same time, he had a feeling of incomprehension. Naturally, this game is actually the one that hides the mystery of Live Central...

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Tensho Gakuen's school trips are a rare format in which all grades can go freely. Saku was about to give up on the school trip due to living expenses and desired hospitalization expenses, but Sosuke and Utami insist that if they aim to get rich quick with the music they distribute, everything will be solved. With the cooperation of the singing club, the three of them complete a new song with live instrumentation, but the finished song shows no signs of selling. Meanwhile, Iimori of the Beautification Promotion Department suggested that we should make PVs.

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There are old materials about the whole of Slive Central, so the members of the archaeology department came to the local museum in School District 9. Wasuiho Usuki, the teacher who leads the exhibit, who is suspicious of the contents of the exhibition that is too bland and touches the terminal at the end of the forbidden area. At the same time, Enjoji Mike, a member of the club suddenly loses consciousness in the hall. Before he knew it, he was traveling to the gorgeous Yoshiwara promenade as a courtesan, Mitsuse.

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At the karaoke box canzone where Saku works part-time, Sosuke and Uta get into a fight due to differences in their way of thinking about music. Caught in the middle, Saku consults with Yota, but when he sees Iku Naruko and Shio Azabu from the Japan Cultural Research Department clash their beliefs with each other, he comes up with the idea of having Sosuke and Uta prove their correctness by reversing the order of lyrics and composition. And by the two of them colliding with each other to their heart's content, a new song that will break out of their shell will be born!

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An abuse incident occurred near Tensho Gakuen, where many cats gather. The members of the singing club form a vigilante group and begin a search for the culprit. Satsuki Nyori, who dotes on cats, is taken to the police box by a constable because she approached a suspicious person from one side, and the head of the department, Kan Perfume Moon, bows her head! Even if he was dismissed, he was able to protect the cat without reprimand, but the culprit finally appeared. It was an old acquaintance of Yan...

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Saku made a name for himself as the music unit "Sakutasuke" and everything seemed to be going well. However, Keishi Higashimoto, who has been watching the world so far, receives a notice from the "government" that "School District 7 will be closed and the worldview will be renovated." This is in view of the current situation where users who watched over "actors" in the form of white people and cats are away from School District 7. Katsura pins his hopes on Saku's success in the singing contest...

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Tensho Gakuen is under the direct jurisdiction of the government, and students are prohibited from singing. In addition, white people and cats could not be seen in the city where user access was restricted. Meanwhile, Keishi is convinced that the success of the contest is necessary to save the school. In a world that is gradually falling apart due to the cracking of passionate users, Saku and Keishi begin to work together to tell the people of the outside world that they are alive.

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Riots of actors break out all over Tensho Gakuen, which has been suppressed by the government. While each of them stood up to government officials to do what they could, Saku finally began to sing on stage. Seeing this scene, Keishi proudly declared that the singing competition would be held! Without succumbing to the guns, a chorus of students echoes around.

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