Kaiduka

Description
Kaiduka is a Japanese creator known for original manga and anime works, primarily in the adult-oriented romance and erotica genres. Information about their personal background, including their exact birth date, is not publicly available. The creator is also known by the alternate name Kaizuka, with the family name written in Japanese as かいづか.

Kaiduka has been active as a manga author since at least 2009, with a substantial body of work that includes both serialized manga and one-shot publications. In the anime industry, Kaiduka is best known as the original creator of the manga Overflow. The manga, whose full title is Overflow: Iretara Afureru Shimai no Kimochi, began publication on October 18, 2018, through the Japanese publisher Suiseisha. The series ran for five tankōbon volumes released between October 2018 and January 2023. The story follows a love triangle involving a college student named Kazushi Sudou and two sisters, Ayane and Kotone Shirakawa.

The manga received a television anime adaptation that aired from January 5 to February 24, 2020. The anime was produced by studio Hokiboshi and directed by Rei Ishikura. In the anime's credits, Kaiduka is officially listed as the original creator, with the screenplay written by Eeyo Kurosaki. The series consisted of eight short episodes, each approximately five minutes in length, and was broadcast in a censored version on Tokyo MX while an uncensored version was made available through the ComicFesta website.

Beyond Overflow, Kaiduka has been credited with other notable works. In 2014, they served as both original creator and original character designer for an original video animation (OVA) project. Other manga titles attributed to Kaiduka include Punyu! Chichi-Mania, with credits for story and art, as well as numerous other manga works published between 2009 and 2017. Their broader manga catalog includes titles released as early as 2009, demonstrating a career spanning over a decade.

Kaiduka's artistic identity centers on romantic comedies with explicit adult content, often exploring relationships and intimate dynamics between characters. The work is typically classified within the ecchi and erotica genres. The anime adaptation of Overflow was noted for its straightforward approach to adult themes and its focus on character interactions. As an original creator, Kaiduka's significance in the industry lies in producing source material for short-form adult anime productions, a niche segment of the market exemplified by the ComicFesta Anime Zone label under which Overflow was released.
Works