New publishing label “Hachamecha Bunko” started — first title is a work of literary fiction
Hacha Mecha Co. Ltd. (Head Office: Chiyoda-ku, Tokyo) today announced its entry into the publishing business with the creation of an original imprint, “Hachamecha BUNKO.”

“Hachamecha Bunko” will go beyond conventional print publication, expanding each story world through illustrations, music, video and other expressive media to deliver an unprecedented emotional experience to readers.
As its inaugural release, the label will publish “The Authenticity of Sorrow” (Kanashimi no Shingan), an early short work of literary fiction by Shitosagi (🐦 @Shitosagi). The ebook is available on the Kindle platform.
Set in a suburban town outside Osaka, the story quietly explores “the limits of empathy” and “the shareability of grief” through the eyes of young people from diverse cultural backgrounds—asking whether feelings can truly transcend language.
To celebrate the launch, the ebook will be offered for ¥99 until May 7 2025 (JST).

What makes “Hachamecha BUNKO” different?
- Concept: Expanding narrative experiences that are not confined to the printed page
- Key feature: Multidimensional promotions that extend each story through illustrations, music, and video
- First release: The Authenticity of Sorrow by Shitosagi (Kindle edition) – Purchase page: https://www.amazon.co.jp/dp/B0F6XKHHTH
“Hachamecha BUNKO” aims to grow alongside its works, delivering a new kind of reading experience unbounded by traditional publishing formats. The label also welcomes writers and creators who wish to craft free-form stories regardless of genre or medium; interested parties are invited to contact the company via the inquiry form on its corporate website.
About Hacha Mecha Co. Ltd.
Company name | Hacha Mecha Co. Ltd. |
Address | #405 Yamatobiru 1-6-16 Kandaizumicho, Chiyoda-ku, Tokyo-to 101 – 0024 Japan |
Representatives | Founder: Satoshi Araragi Co-Founder: Seiichi Kawamura |
Business areas | Entertainment, web content production, publishing, and more |
Corporate site | https://hcmch.com/ |
X (Twitter) | https://x.com/HachaMecha0614 |
Inquiries | Use the contact form on the corporate site |
Hachamecha will continue to pursue its corporate slogan—“SEmbrace the ‘hacha’ surprises and ‘mecha’ delights, for an ecstatically joyful day, every day.”—by developing multifaceted entertainment initiatives beyond publishing.