, often referred to simply as , or , is a Japanese manga series written by and illustrated by . It has been serialized in Shueisha's manga magazine Weekly Young Jump since December 2019, with its chapters collected in 25 volumes as of March 2026. The manga has been licensed for English release in North America by Seven Seas Entertainment.
The series follows high school student Rentaro Aijo, who, after 100 consecutive romantic rejections, is visited by the God of Love at a shrine. The god reveals a divine error has destined Rentaro with 100 soulmates, but warns that any soulmate he rejects will be cursed with fatal misfortune. To prevent their deaths, Rentaro resolves to simultaneously date them all at the same time.
An anime television series adaptation, produced by Bibury Animation Studios, aired its first season from October to December 2023. A second season aired from January to March 2025. A third season is set to premiere in July 2026.
Rentaro Aijo has confessed to, and been rejected by, 100 girls in his lifetime. On the last day of middle school, he visits a shrine and prays that he get a girlfriend during his time at high school. Suddenly, the God of Love appears and tells Rentaro that the reason for his non-existent love life is because everyone is only supposed to have one soulmate in their life. Due to a clerical error on the God of Love's part, Rentaro is destined to have 100 which is to begin when he enters high school.
Sure enough, on the first day of high school, Rentaro meets the nymphomaniacal Hakari Hanazono and Karane Inda, the first two soulmates. They experience love at first sight, but Rentaro cannot decide between the two. That evening, he revisits the God of Love and is informed that if he does not return the feelings of any of his 100 soulmates, they will die in an accident. Not wanting such a fate to befall the girls, Rentaro decides to date all of them simultaneously, beginning with Hakari and Karane with their blessing.
As the story continues, more girls are introduced and become Rentaro's girlfriends, establishing a polyamorous relationship called the "Rentaro Family". The story revolves around Rentaro meeting new girlfriends and the interactions between the Rentaro Family members.
Written by and illustrated by , The 100 Girlfriends Who Really, Really, Really, Really, Really Love You started in Shueisha's manga magazine Weekly Young Jump on December 26, 2019. On February 19, 2026, Nozawa announced that serialization pacing of the manga would slow down due to her maternity leave after the birth of her new child and that she plans to gradually return to the original serialization pacing as her health allows. Its chapters are collected and published by Shueisha into individual volumes. The first volume was released on April 17, 2020. As of March 18, 2026, 25 volumes have been released.
On July 2, 2021, Seven Seas Entertainment announced they licensed the series for English publication in North America in print and on digital platforms in single volume editions. The first volume was released on February 22, 2022.
An anime television series adaptation, produced by Bibury Animation Studios, aired its first season from October 8 to December 24, 2023, on Tokyo MX and other networks. A second season aired from January 12 to March 30, 2025. A third season is set to premiere in July 2026.
A spin-off light novel written by Hamubane, titled The 100 Girlfriends Who Really, Really, Really, Really, Really Love You: Secret Love Story was released under Shueisha's Jump J-Books light novel imprint on July 19, 2023. Seven Seas Entertainment licensed the light novel for English publication. It was released digitally on October 3, 2024, and was released in print on November 12 of the same year.
By July 2021, the manga had over 800,000 copies in circulation. By March 2022, it had 1 million copies in circulation. By November 2023, it had over 1.65 million copies in circulation.
In August 2020, the series ranked second out of the 50 nominees on the sixth Next Manga Award, with 19,902 votes. The series ranked 19th on the 2021 Shinkan Manga Taishà  by Tokyo Manga Reviewers.
The series ranked eighth on AnimeJapan's fifth "Most Wanted Anime Adaptation" poll in 2022.