The Highly Anticipated Hit 'The Man in the Box,' a Sensation on Social Media, Begins Streaming on Manga Park! Read One Chapter Weekly for Free with Coins!

and factory Inc. (hereinafter referred to as and factory) and Hakusensha Co., Ltd. (Headquarters: Chiyoda-ku, Tokyo; President and CEO: Yasufumi Takagi; hereinafter referred to as Hakusensha) are pleased to announce that their jointly operated manga app, 'Manga Park,' has begun streaming the highly buzzed-about and sensational hit title, 'The Man in the Box.'

The Hugely Popular Work That Went Viral on Social Media, 'The Man in the Box,' Arrives on Manga Park!

'The Man in the Box,' which has become a hot topic among many readers on social media with comments such as 'It was an incredible work' and 'I read it all in one sitting,' has finally begun streaming on Manga Park.

Furthermore, Manga Park will be implementing a 'Sequential Free Release' for chapters 1 through 7 of this work, allowing users to read one chapter at a time each week using FREE coins. We encourage you to experience reading on the app and enjoy this work at a great value, just as the excitement on social media continues.

*FREE coins are coins that automatically replenish daily at 6:00 AM and 9:00 PM, available for anyone to use for free.

© 都会 / Hakusensha

Synopsis of 'The Man in the Box'

In a residential area, a dead body of a man inside a box is discovered in a room of a house... Ten-odd years prior, a drawing by Yumiko, a 5-year-old girl who said, 'My papa lives in a box,' caused a stir among the adults around her. Yumiko and her mother live with 'The Man in the Box.' However, as she enters adolescence, she begins to harbor various emotions and questions. 'Who is inside the box?' And then, at the age of 18, Yumiko is revealed a shocking truth... With comments like 'So many shocking things!' 'I couldn't stop reading!' and 'The payoff of the foreshadowing was satisfying,' it's a sensation on social media! This is a dark psycho-suspense that depicts the hidden darkness of 'family' that cannot be seen from the outside.

About Manga Park

Manga Park is a comprehensive entertainment app that features a curated selection of popular works from manga magazines published by Hakusensha, such as 'Hana to Yume,' 'LaLa,' and 'Young Animal.' It continues to evolve as a platform where a wide range of people, regardless of gender, can enjoy content daily, not only manga but also radio programs by popular voice actors and video content from idols.

- Price: Free to play (in-app purchases available)

- Supported Platforms: iOS/Android

- Download on iOS/Android: https://manga-park.com/app

- Official Website: https://manga-park.com/

- Official X: https://x.com/manga_park

About and factory

and factory's mission is to 'deliver & to everyday life,' meaning to provide services that enrich people's lives. We earnestly pursue business possibilities in various fields beyond just entertainment.

Company Overview

and factory Inc. (https://andfactory.co.jp/)

Representative: President and CEO, Michiharu Aoki

Location: Sumitomo Fudosan Aobadai Tower 9F, 3-6-28 Aobadai, Meguro-ku, Tokyo 153-0042

Established: September 16, 2014

Capital: 70 million yen (as of the end of January 2026)

Number of Employees: 128 (as of the end of August 2025)

Securities Code: 7035