Shinichi Ishizuka is a Japanese manga artist born in 1971 in Ibaraki Prefecture. His path to becoming a creator was unconventional, shaped significantly by his time studying in the United States. After high school, he attended Southern Illinois University and later transferred to San Jose State University to study meteorology. During his years in America, he was introduced to mountain climbing and gained a deep appreciation for jazz music, two experiences he would later describe as the most important souvenirs he brought back to Japan.

Upon returning to Japan, Ishizuka worked at an import company that soon went bankrupt. Facing unemployment, he decided at the age of 28 to pursue a career as a manga artist, despite being told by a former boss that the goal was impossible. He taught himself to draw by studying the works of established creators like Naoki Urasawa and Kenshi Hirokane. In 2001, his one-shot manga The First Step won the Shogakukan Newcomer Manga Award in the general category, marking his formal debut. Following this success, he worked as an assistant for six months before launching his first serialized work.

Ishizuka began his first major series, Gaku: Minna no Yama, in the magazine Big Comic Original in 2003. The manga, which focused on mountain rescue, ran until 2012 and established his reputation as a storyteller. It received significant critical acclaim, winning the first Manga Taishō award in 2008, the Shogakukan Manga Award for general manga in 2009, and an excellence prize at the Japan Media Arts Festival in 2012. The series was adapted into a live-action film in 2011.

His second major work, Blue Giant, began serialization in Big Comic in 2013. The manga centers on a young man from Sendai who aspires to become a world-class jazz saxophonist. Ishizuka has stated that the idea for a jazz manga was in his mind even before Gaku, but he felt he needed to develop his skills as an artist before taking on the challenge of representing music visually. The series concluded its first part in 2016 and has since continued through multiple sequel series: Blue Giant Supreme, which follows the protagonist's journey in Europe; Blue Giant Explorer, set in the United States; and Blue Giant Momentum, which began in 2023. Blue Giant has been highly successful, winning the Shogakukan Manga Award in 2017 and the grand prize in the manga division at the Japan Media Arts Festival the same year. It received an anime film adaptation in 2023, with Ishizuka credited as the original author.

Throughout his career, Ishizuka has developed a distinct artistic identity focused on depicting passionate dedication to a craft. Both of his major series explore characters striving for mastery in physically and emotionally demanding fields, mountain rescue and jazz performance. His work is noted for attempting to convey physical movement and, in the case of Blue Giant, the sensation of sound through static images. He has cited influences such as the motorcycle manga Bari Bari Densetsu for its depiction of movement and the works of Kenshi Hirokane for their clarity and readability. He has also noted his interest in portraying the relationships between ordinary people, often structuring his stories without clear antagonists.

In addition to his major series, Ishizuka has worked on other titles, including Hokurō: Last Hunter, an irregularly serialized manga, and various short works. His career is marked by a deliberate, self-taught path to success, with his background in the United States providing a foundational influence for the themes that define his most acclaimed work.