| Ichijinsha 株式会社一迅社 | |
| Parent: | Kodansha |
| Foundation: | August 1992 |
| Key People: | Osamu Harada (president) |
| Location: | Shinjuku, Tokyo, Japan |
| Revenue: | ¥10 million[1] |
| Industry: | Books, magazines, manga |
is a Japanese publishing company focused on manga-related publication, including magazines and books.
The company was first established in August 1992 as a limited company under the name Studio DNA whose main purpose was to edit shōnen manga. In January 1998, Studio DNA became a public company and moved from merely editing to now being a publishing company. In December 2001, a publishing company was formed named Issaisha which started the shōjo manga magazine Monthly Comic Zero Sum. In March 2005, Studio DNA and Issaisha merged into the current Ichijinsha company.[1] In October 2016, Ichijinsha was acquired by Kodansha and became its wholly owned subsidiary.[2]