In the description of the contents of this year's third edition of the magazine Monthly comic alive from the publisher Kadokawa It has been confirmed that the animated adaptation of the light novels by Shuichi Nimaru and illustrated by Ui Shigure, Osananajimi ga Zettai ni Makenai romantic comedy ((The Romcom where the childhood friend won't lose! or Osamake) will premiere in Japan next April.

The project was announced at a special event in October 2020 at which the speaker and production team were also introduced. On the other hand, Nimaru and Shigura began publishing the light novels through the publishing label in June 2019 Dengeki Bunko from the publisher Kadokawa. The publisher published the fifth volume on October 12th. A manga adaptation is provided by Ryou itouwho published it in the magazine Monthly comic alive from the publisher Kadokawa since November 2019.


  • Yoshitsugu Matsuoka as Sueharu Maru.
  • Inori Minase as Kuroha Shida.
  • Ayane Sakura as Shirokusa Kachi.
  • Saori Oonishi as Maria Momosaka.

Production team

  • Takashi Naoya ((3D Kanojo: Real girl, Touken Ranbu: Hanamaru, Val x love) is responsible for the anime direction and character designs in the studios Doga Kobo.
  • Yoriko Tomita ((Beelzebub-jou no Okinimesu Mama, Dounika naru hibi) is responsible for writing and monitoring the scripts.
  • Atsushi Soga ((Devil and realist, Ganbare-bu Go on!) helps with character design.

Synopsis of Osananajimi ga Zettai ni Makenai romantic comedy

My childhood friend, Shida Kuroha, seems to have romantic feelings for me. She is my neighbor too and she is small and cute. With a beautiful personality, she is like my older sister and that is one of her main strengths ... But I already have someone I like, the school's beautiful idol, Kachi Shirokusa. Although the second thought doesn't give me a chance to walk to my house from school one day, she talked to me and smiled at me. Maybe I have a chance, don't you think so?

At least I thought since I found out that Shirokusa already has a boyfriend, my life has gotten worse. I want to die. Why am I not? Even though she's my first love ... As I sank into my own despair, Kuroha mentioned, “If it's too difficult for you, why don't we take revenge? The best revenge ever ... "

Source: official page

(c) 2021 c 丸 修 K / KADOKAWA / お さ さ け cc (c) Shuichi Nimaru 2019 イ ラ ス ト / し ぐ れ れ い


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