K-pop group BABYMONSTER is set to release their first original Japanese song, Ghost, as the theme song for the live-action film Mieruko-Chan, hitting theaters on June 6, 2025. This marks a significant milestone for the seven-member group, blending their global appeal with a chilling horror-comedy narrative.
The Mieruko-Chan film, based on Tomoki Izumi’s popular manga, follows high school girl Miko Yotsuya, who can see terrifying ghosts but chooses to ignore them to maintain a normal life. BABYMONSTER’s Ghost will serve as the movie’s main theme, with its release scheduled for May 7, 2025, at midnight KST/JST. The song’s theme focuses on inner strength and staying true to one’s path, resonating with the film’s story of resilience.
BABYMONSTER’s Role in Mieruko-Chan
BABYMONSTER, formed by YG Entertainment, consists of seven members: Ruka, Pharita, Asa, Ahyeon, Rami, Rora, and Chiquita. The group debuted on April 1, 2024, with their mini-album BABYMONS7ER and has since gained attention for hits like Batter Up and Sheesh. Their selection for Mieruko-Chan’s theme song is their first venture into Japanese cinema.
The announcement came on March 21, 2025, via BABYMONSTER’s official channels. A statement shared on Reddit highlighted the song’s message:
We will be performing the theme song for the movie “Mieruko-chan”. The theme of this song is the strength to not be swayed by the voices around you and to forge ahead on the path you believe in. I hope that this song, along with the movie, will become an empowering song for all girls living today.
The track was first teased during BABYMONSTER’s Hello Monsters world tour stop in Aichi, Japan, on March 22, 2025, when Rami performed a snippet. Fans on Reddit praised the preview, noting its “Monster High OST” vibe, aligning with the group’s bold identity.
Mieruko-Chan Film Details
Mieruko-Chan, directed by Yoshihiro Nakamura, adapts Tomoki Izumi’s manga, serialized on Kadokawa’s ComicWalker since November 2018. The manga, with over 3 million copies sold in Japan, also inspired a 2021 anime by Passione. The live-action film stars Nanoka Hara as Miko Yotsuya, with Rinka Kumada as her friend Hana Yurikawa. Other cast members include Akane Hotta as Ms. Arai, Kenichi Takito, and Saki Takaoka as Miko’s parents.
The film’s trailer, released on March 27, 2025, featured Ghost and introduced the tagline: “Whatever you can see, please ignore it until the end.” A behind-the-scenes video showcased Nanoka Hara discussing her role, emphasizing Miko’s struggle to stay calm amid supernatural chaos. The movie, set for release on June 6, 2025, promises a mix of horror, comedy, and emotional depth.
BABYMONSTER’s Journey and Ghost
BABYMONSTER’s Ghost is their first Japanese OST single, following their debut Japanese version of Batter Up in August 2024. The group’s rapid rise includes breaking records with Batter Up, which amassed 22.59 million views in 24 hours, and Sheesh, which hit 200 million views in 33 days. Their Hello Monsters world tour, launched in Seoul on January 25, 2025, has seen sold-out shows across Japan, the US, and beyond.
The song Ghost was previewed at a Mieruko-Chan event on April 23, 2025, with a clearer snippet shared online. Fans expressed excitement on X, with posts noting the song’s haunting yet empowering tone. One user wrote:
New preview of #BABYMONSTER’s OST “GHOST” clear version in movie character introduction Mieruko-chan.
The track’s production details remain under wraps, but YG Entertainment has increased its producer team for BABYMONSTER’s projects, ensuring high-quality output.
Fan and Netizen Reactions
Fans have flooded social media with enthusiasm. On Reddit, a user commented:
Its giving Monster High ost and im here for it!! I was literally saying in a different post that i was hoping they release something that taps into their “Monster” identity more and i feel like this might be it.
Another wrote:
Ghost, I love that name, I can’t wait for it!!
X posts echoed the excitement, with one stating:
BABYMONSTER’s first full Japanese track titled ‘Ghost’ for the movie ‘Mieru Ko-chan’ will be released 15 days from now.
The group’s global fanbase, MONSTIEZ, has rallied behind the project, praising BABYMONSTER’s versatility in tackling a horror-comedy OST.
Mieruko-Chan’s Cultural Impact
Mieruko-Chan’s manga and anime have built a strong following for their unique blend of horror and humor. The story follows Miko, who faces ghosts like the Train Monster, voted the scariest in a 2021 contest by fans. The anime, aired in 2021, earned a 7.1/10 on IMDb for its suspenseful yet funny take on the supernatural.
The film aims to capture this balance, with Nanoka Hara’s casting drawing praise for her roles in Suzume and Oshi no Ko. The manga’s English license by Yen Press and its 12 tankobon volumes highlight its global reach.
What’s Next for BABYMONSTER
BABYMONSTER continues their Hello Monsters tour, with added dates in Kanagawa, Hong Kong, and Taipei due to fan demand. Their debut album Drip, released on November 1, 2024, featured nine tracks and solidified their K-pop dominance. YG Entertainment plans a full-length album release in autumn 2025.
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The group’s Ghost single will drop on May 7, 2025, ahead of the Mieruko-Chan premiere, offering fans a taste of their Japanese sound. With their growing influence, BABYMONSTER is poised to make waves in both K-pop and global entertainment.
CREDITS: animenewsnetwork, kpop.fandom.com
