At club-level, he currently plays for Sir Susa Vim Perugia at the SuperLega (The highest level of the Italian Volleyball League).

Then, he was selected as a captain of Aichi Prefecture, and won the silver medal at the JOC Junior Olympic Cup the same year.

In High School, he became the first student to win "Triple Crown" at 3 tournaments: Inter-High, National Polity, Haruko Volley for 2 consecutive years.

[2] In the 2014–2015 season, Ishikawa played for the Italian team Parmareggio Modena about 3 months after the end of the All Japan Intercollegiate Volleyball Championship.

After graduating from university in March 2018, Ishikawa signed his first professional contract with the Italian team Emma Villas Siena (The club was ranked up to the SuperLega in the 2018–2019 season).

[17] He continued to compete in the 2013 FIVB Volleyball Men's U21 World Championship in Turkey the same year,[18] where the Japanese team finished in 10th place.

[19] In April 2014, Ishikawa entered Chuo University (Faculty of Law, Department of Political Science), and was called for the Japan men's national volleyball team for the first time.

[21] In October 2014, he was part of the Japanese roster for the 2014 Asian Men's U20 Volleyball Championship in Manama, Bahrain, and led the team to finish in 5th place.

[31] 『Project CORE』was a project launched by the JVA with the aimed to "revitalize volleyball, deliver courage and excitement" to the people of Japan toward 2020 as well as the future beyond.