is a Japanese manga series by . Ani ni Aisaresugite Komattemasu was serialized in the semi-monthly manga magazine Sho-Comi from June 21, 2015, to March 20, 2018. By 2017, the series sold more than 1.8 million copies in print.
A live-action film adaptation was released in Japan on June 30, 2017. To promote the live-action film, a television drama adaptation featuring the same cast was broadcast on Nippon TV from April 13, 2017, to May 11, 2017.
High school student Setoka was adopted into the Tachibana family as a child, and despite only finding out recently, she still lives a peaceful life with them. She has a close relationship with her older brother, Haruka, but recently, he has started becoming distant from her. One night, Haruka admits to Setoka that he has always loved her romantically. Setoka navigates through her feelings for Haruka, while realizing that several other boys are also attracted to her.
Ani ni Aisaresugite Komattemasu was written and illustrated by . It was serialized in the semi-monthly manga magazine Sho-Comi from 2015's issue 14 released on June 21, 2015, to 2018's issue 8 released on March 20, 2018. The chapters were later released in eleven bound volumes by Shogakukan under the Flower Comics imprint. Volume 11 also includes a 16-page prologue to Yagami's next work, Wake Atte Kinà  Ubawaremashita.
In 2018, Yagami stated through an interview with Natalie that she felt the only way she could create a happy ending for Setoka and Haruka was for them to not be blood-related siblings. She sought to introduce this plot point early on, so that she could focus on the "action", using the 1998 American film Die Hard as an example. Yagami stated the fast pace of Ani ni Aisaresugite Komattemasu was partially due to the Sho-Comi being released on a semi-monthly basis.
A live-action film adaptation of Ani ni Aisaresugite Komattemasu was announced on September 19, 2016. The film stars Generations from Exile Tribe member Ryota Katayose as Haruka, Tao Tsuchiya as Setoka, and Yudai Chiba as Takane. Additional cast members include Bullet Train member Takuya Kusakawa and Yosuke Sugino.
At the time of the film project's announcement, only two volumes of the manga had been released. The film was produced by the same production team as the live-action film adaptation of Defying Kurosaki-kun. It was directed by and written by . The film's theme song, "Sora", was performed by Generations from Exile Tribe. "Koise yo Watashi" and "Your Melody..." were both performed by and featured as insert songs.
The film adaptation was released nationwide in 251 theaters in Japan on June 30, 2017, opening at No. 3 on opening weekend and grossing a total of billion. It was released on Blu-ray and DVD on January 1, 2018.
To promote the live-action film adaptation, a five-episode promotional television drama was broadcast weekly on Nippon TV from April 13, 2017, to May 11, 2017. The main cast reprised their roles from the film. The drama adaptation was released onto Blu-ray and DVD on May 11, 2017. In addition, a special virtual reality video where the viewer can experience the events of the drama and film from Setoka's perspective was released on dTV on March 16, 2017.
In 2017, Ani ni Aisaresugite Komattemasu sold a consecutive total of 1.8 million copies in print.
Kono Manga ga Sugoi! reviewed the live-action film adaptation favorably, stating that there were many scenarios that were "funny" and "heart-pounding".