March begins, and there is only one month left in the third term. Sakuta Azusagawa is about to celebrate the graduation of his girlfriend Mai Sakurajima. As he waits for Mai at Shichirigahama beach, an elementary school-aged girl who looks like Mai did when she was a child actress appears in front of him.
"Who are you, Mister?" she asks.
Is this a dream or an illusion? As he thinks about this mysterious experience, his father calls him.
"It's about your mother. She says she wants to see Kaede," he says.
Kaede's mother never came to terms with what happened to Kaede. Having been hospitalized for so long, their mother finally wants to see her daughter. To fulfill their mother's wish, Sakuta makes the decision to meet face-to-face — something they haven't done in a long time. He's unable to hide his nervousness about all this.
Never-before-seen scars begin to appear on Sakuta's body. Could these be warning signs of a new type of puberty syndrome?



  • Original Work
    Hajime Kamoshida
    ("Seishun Buta Yaro" series published by Dengeki Bunko)
  • Original Illustration
    Keji Mizoguchi
  • Director
    Soichi Masui
  • Series Composition/ Screenplay
    Masahiro Yokotani
  • Character Design/ Chief Animation Director
    Satomi Tamura
  • Animation Production


  • Sakuta Azusagawa
    Kaito Ishikawa
  • Mai Sakurajima
    Asami Seto
  • Kaede Azusagawa
    Yurika Kubo
  • Tomoe Koga
    Nao Toyama
  • Rio Futaba
    Atsumi Tanezaki
  • Nodoka Toyohama
    Maaya Uchida
  • Shoko Makinohara
    Inori Minase


  • Sakuta AzusagawaSakuta Azusagawa
  • Mai SakurajimaMai Sakurajima
  • Kaede AzusagawaKaede Azusagawa
  • Tomoe KogaTomoe Koga
  • Rio FutabaRio Futaba
  • Nodoka ToyohamaNodoka Toyohama
  • Shoko MakinoharaShoko Makinohara
  • Knapsack KidKnapsack Kid
  • Sakuta Azusagawa - Kaito Ishikawa Sakuta Azusagawa - Kaito Ishikawa
    April 10th

    strange boy that doesn't own a smartphone in this day and age. Ever since he found a wild bunny girl at the local library during Golden Week, he's met many young ladies with various Adolescence Syndromes.
    He's currently dating his senpai, popular actress Mai Sakurajima. In order to get into the same university as Mai, he studies hard for the entrance exams.

  • Mai Sakurajima - VA: Asami Seto Mai Sakurajima - VA: Asami Seto
    December 2nd

    A third-year student at Minegahara High School.
    Previously busy with her work as an actress, Mai was not used to life as a student and thus was treated like the wind, an invisible force somewhere. Due to this treatment, she developed Adolescence Syndrome and was no longer visible to those around her. With the help of Sakuta, Mai was able to fix this problem, go back to work as an actress, and study for her university entrance exams. She's quite busy day to day.。

  • Kaede Azusagawa:Yurika Kubo Kaede Azusagawa:Yurika Kubo
    November 25th

    Sakuta's little sister.
    Kaede developed a case of Adolescence Syndrome that scarred her body as she suffered mental anguish from online bullying at the previous middle school she attended. The bullying caused her mental stress and memory loss. Two years after that, she developed a different personality known as "Kaede," who never left the house. Even after her memory returned, "Kaede" has taken over her endeavors and now she's working hard on going back to school like everyone else. With middle school graduation coming up soon, she worries about her future going forward.

  • Tomoe Koga:Nao Toyama Tomoe Koga:Nao Toyama
    May 23rd

    A first-year student at Minegahara High School.
    Tomoe was always kicking each other's butts with her friend and senpai, Sakuta. After being confessed to by the senpai her friend admires, she developed Adolescence Syndrome that repeated the same day. Always filled with new topics, Tomoe is now on good terms with Sakuta as senpai and kouhai. She also works part-time with Sakuta at a family restaurant.

  • Rio Futaba:Atsumi Tanezaki Rio Futaba:Atsumi Tanezaki
    October 23rd

    A second-year student at Minegahara High School who's a part of the science club. She's one of Sakuta's few friends. Sakuta always goes to her for advice about cases of Adolescence Syndrome he encounters. She gives him her advice all the meanwhile looking pretty discontent while doing so. Suffering from loneliness, she has hurt herself using social media in the past and has experienced Adolescence Syndrome where two contradicting sides of her existed.

  • Nodoka Toyohama:Maaya Uchida Nodoka Toyohama:Maaya Uchida
    March 14th

    Nodoka is Mai's younger-half sister from a different mother who's part of the idol group, Sweet Bullet. Compared to Mai since she was a young child, she developed an inferiority complex that caused her to develop Adolescence Syndrome in which she switches bodies with Mai. Everyone knows she's attached to her older sister and she keeps Sakuta in check so that he doesn't do anything bad to Mai. Nodoka gets along with Kaede and Mai dotes on her.

  • Shoko Makinohara:Inori Minase Shoko Makinohara:Inori Minase
    April 10th

    A first-year student in middle school. She finds a stray cat in the rain, and when she finds herself in trouble, she encounters Sakuta. Burdened with a serious heart disease since birth, she developed puberty syndrome symptoms due to fear for her future and of death. She creates a mature, future version of herself by changing the speed of time and its flow. Now, having received a heart transplant, she recovers from the surgery until she can go out again.

  • ランドセルガール ランドセルガール

    A mysterious girl carrying a knapsack on her back. Sakuta encounters her at Shichirigahama beach as he waits for Mai's graduation ceremony to finish. She looks just like Mai did when Mai was a child actress.