The romantic comedy manga series Someone’s Girlfriend (Japanese: Aitsu no Kanojo), penned and illustrated by Nikumaru, is set to conclude its serialization in three chapters. The announcement was made by a Shonen Sunday magazine manga editor, Miyakawa, last Friday via X (formerly Twitter).
The series has captivated readers with its intricate romantic entanglements and is published on Shogakukan’s digital platform, Sunday Webry.
A Look Back at “Someone’s Girlfriend”
Someone’s Girlfriend centers on Riku, a young man increasingly obsessed with Shizuku, who happens to be his best friend’s girlfriend. The plot thickens when Shizuku unexpectedly arrives at Riku’s house, initiating a dangerous and forbidden romance during their final year of high school. The manga delves into themes of forbidden love and emotional complexity, offering a unique take on the romantic comedy genre.
Serialization History
The manga first appeared as a one-shot on Shogakukan’s Sunday Webry on November 27, 2021, before beginning its regular serialization on the same platform in September 2022. Shogakukan has since collected its chapters into individual tankōbon volumes, with the first volume released on February 10, 2023. As of August 8, 2025, seven volumes have been released.
English Release and Publisher
For North American audiences, the series has been licensed by Seven Seas Entertainment, making the intriguing story accessible to a wider English-speaking readership. Seven Seas shipped the fourth volume on September 9 and is scheduled to release the fifth volume on January 20.
Author’s Other Works
Beyond Someone’s Girlfriend, Nikumaru is also known for the four-panel manga Bad Girl, which debuted in Houbunsha’s Manga Time Kirara Carat in December 2020. This series has also seen success, with its fourth compiled book volume published in July 2024 by Houbunsha. Yen Press handles the English publication of Bad Girl, with the first volume released on March 24, and it even inspired a television anime that premiered on July 5.
The conclusion of Someone’s Girlfriend marks the end of a significant romantic comedy series for many fans. Readers will undoubtedly be looking forward to how Nikumaru wraps up the high school romance in the final three chapters.
