The story follows a young pianist named Kо̄sei Arima, who loses the ability to perform the piano after his mother's death, and his experiences after he meets violinist Kaori Miyazono.

Kōsei meets Kaori Miyazono, an audacious, free-spirited, fourteen-year-old violinist whose playing style reflects her manic personality.

While playing in the finals of the Eastern Japan Piano Competition, Kōsei sees Kaori's spirit accompanying him and realizes she has died during the surgery.

When Naoshi Arakawa first wanted to be a manga artist, he entered a one-shot comic, which featured a male and female violinist performing together, into the Monthly Shōnen Magazine Grand Challenge.

[22] A spin-off manga titled Shigatsu wa Kimi no Uso: Coda, was bundled with the Blu-ray release of the anime series and was published in tankōbon format on August 17, 2016.

[10] Yui Tokiumi wrote a light-novel spinoff titled Your Lie in April: A Six Person Etude, which was released in Japan on November 17, 2014.

[26] The anime television series of Your Lie in April that A-1 Pictures produced was aired from October 10, 2014, to March 20, 2015, on Fuji TV's Noitamina block.

[49] Kyōhei Ishiguro directed the series, Takao Yoshioka wrote the scripts, Yukiko Aikei designed the characters, and Masaru Yokoyama composed the soundtrack.

[2] An original video animation (OVA), titled Moments, was bundled with the limited-edition release of the manga's eleventh volume.

Most of the staff and cast from the television series reprised their roles in the OVA,[50] which retells Takeshi's and Emi's childhoods and their rivalry with Kōsei.

[52] The series in licensed in the United Kingdom and Ireland by Anime Limited,[53] and in Australia and New Zealand by Madman Entertainment, who streamed it on AnimeLab.

[55] Speculations were confirmed in September 2015 when the live-action film's main cast was announced, with Kento Yamazaki as Kōsei Arima, Suzu Hirose as Kaori Miyazono, E-girls member Anna Ishii as Tsubaki Sawabe, and Taishi Nakagawa as Ryōta Watari.

[58] The main cast was Shintarō Anzai as Kōsei Arima, Arisa Matsunaga as Kaori Miyazono, Misato Kawauchi as Tsubaki Sawabe, and Masanari Wada as Ryōta Watari.

[5] On October 10, 2019, Toho and Fuji TV announced a musical adaptation of Your Lie in April would be staged at Tokyo Tatemono Brillia Hall from July 5–29, 2020.

[59] The adaptation starred Yuta Koseki and Tatsunari Kimura [ja] as Kosei Arima, Erika Ikuta as Kaori Miyazono, Fuka Yuduki as Tsubaki Suwabe, and Koki Mizuta and Takuto Teranishi as Ryōta Watari.

[64] The English language version of the musical held a West End concert staging at the Theatre Royal, Drury Lane in April 2024.

The creative team includes music by Frank Wildhorn, English language book by Rinne Groff, lyrics by Tracy Miller and Carly Robyn Green, arrangements and orchestrations by Jason Howland, and direction by Nick Winston.

[65] Following this staging, a full production was announced for a twelve week run at the Harold Pinter Theatre beginning June 28, 2024.

The play will take place at the Showa Women's University's Hitomi Memorial Hall in Tokyo, before moving to Aichi and Osaka in September, and Toyama in October.

The double cast includes Kurumu Okamiya and Misato Higashijima as Kōsei Arima, Ririka Kato and former Juice=Juice member Karin Miyamoto as Kaori Miyazono, Shio Kisui and Saki Yamamoto as Tsubaki Sawabe, and Masato Yoshihara and Taisei Shima as Ryōta Watari.

The music was composed by Frank Wildhorn, lyrics by Tracy Miller and Carly Robyn Green, arrangements and orchestrations by Jason Howland, and translated and directed by Ikko Ueda.

[69][70] Rebecca Silverman from Anime News Network (ANN) was more critical and said the plot is not as emotional as Arakawa intended it to be.

[76] The first volume was ranked in the Young Adult Library Services Association's 2016 list of the top 112 graphic novels for teenagers.