Seneka Alto is the pen name of a Japanese manga artist and illustrator, also known under the name Aruto Seneka, which is written in Japanese as 或十せねか. Born in Shizuoka Prefecture, the creator has been active in the industry since the mid-2000s, contributing original serializations and illustrations to a variety of manga magazines.

The most notable work associated with Seneka Alto is the manga Brandish, which began serialization in 2007 and concluded in 2014. For this title, Seneka Alto served as the artist, working from an original story by the writer Rusty Soul. The series was published in Comic Unreal, a magazine known for adult-oriented content, and spanned six volumes. It achieved enough popularity to be adapted into a two-episode original video animation in 2012, with Seneka Alto receiving credit as an original creator alongside the writer. The story follows a succubus named Twiska and her complex relationship with a young hero, blending fantasy elements with erotic comedy.

In addition to Brandish, Seneka Alto has created other serialized works. These include Sengoku!? ~Yukyu Ransen Renka Tan~, which was published in Monthly Dragon Age, and Seishokuki Aliens Meet Girls, a series that began serialization in 2020. The creator has also contributed illustrations to various projects, including work for the publisher Melonbooks.

Regarding artistic identity, Seneka Alto maintains a personal website and a social media presence under the name AltoSeneka. Descriptions of the creator’s interests include a preference for drawing positive and strong-willed female characters, as well as a fondness for gothic and punk aesthetics and characters with white or silver hair. The creator has been involved in dojinshi circles since middle school and operates under the circle name VENOM. While primarily known for manga, this background also includes work on original illustrations for other media.