Ishikura began his career in the industry in 2000 as a production assistant for Invincible King Tri-Zenon under E&G Films, and made his debut as an episode director with the 18th episode of Shingu: Secret of the Stellar Wars.
In 2007, Ishikura had his first job with Shaft as an episode director and storyboard artist for Hidamari Sketch.
[4] For the next 5 years, Ishikura worked mainly with Shaft, and made his series directorial debut with Natsu no Arashi!
[5] The following year, he directed the third season to the Hidamari Sketch franchise with Shinbo,[6] but he started to work less with Shaft.
Following his mainstay departure from Shaft, Ishikura dirercted Da Capo III (2013) at studio Actas, but mainly based himself out of Studio Deen, where he directed both Sakura Trick (2014) and a short Ongaku Shōjo (2015) film.