Doujinshi (同人誌), also romanized as dōjinshi, is the Japanese term for self-published print works, such as magazines, manga, and novels. Part of a wider category of doujin (self-published) works, doujinshi are often derivative of existing works and created by amateurs, though some professional artists participate in order to publish material outside the regular industry.

Ken Akamatsu is a Japanese manga artist and politician who has served since 2022 as a member of the House of Councillors. He made his professional manga debut in 1993, and is best known as the author of Love Hina (1998–2001) and Negima! Magister Negi Magi (2003–2012), both serialized in Weekly Shōnen Magazine; a sequel to Negima!, UQ Holder!, was serialized from 2013 to 2022. In 2011, Akamatsu founded J-Comi, a free digital distributor of out-of-print manga.