The April 2019 issue of Shueisha’s Bessatsu Margaret magazine has announced that Ayuko Hatta’s Haibara-kun wa Gokigen Naname (Haibara’s in a Bad Mood) manga will end in the magazine’s next issue on April 12, 2019.
The manga’s story focuses on Mio, a girl who is treated as her class’ mascot, who gets to know a transfer student named Haibara, who doesn’t like her. However, Mio is in danger of repeating a year, and will stop at nothing to get the studious Haibara to help her pass.
Hatta launched the manga in Bessatsu Margaret in May 2018. Shueisha published the manga’s second compiled book volume on January 25, 2019.