He made his debut in 2001 and began his first series, Gaku: Minna no Yama, a manga about mountain climbing, in Big Comic Original in 2003, where it was serialized until 2012.

Ishizuka studied at universities in the United States, where he was introduced to mountain climbing and given an increased exposure to jazz.

[1][2] During his time in the United States, a friend of his told him that he chose to study archeology abroad after reading Master Keaton by Naoki Urasawa.

[2] Upon returning to Japan, Ishizuka worked at an import company run by an acquaintance from the United States.

[5] On September 20, 2003, Ishizuka began serializing Gaku: Minna no Yama, a manga about mountain climbing, in Shogakukan's Big Comic Original magazine.

[6] Ishizuka began serializing Blue Giant, a manga about jazz, in Shogakukan's Big Comic magazine on May 10, 2013.

[16][17] A fourth series, titled Blue Giant Momentum, began serialization in Big Comic on July 25, 2023.