[1] The other was Taiga Ishikawa, who was elected to the Toshima ward council.
Born in Ota-ku, Tokyo, Ishizaka grew up in Inagi City.
In 2010, he completed the master's program at the Graduate School of Social Design, 21st Century, Rikkyo University.
[2] He is also the first member of the Nakano Ward to have a mental health worker qualification.
[3] On July 6, 2017, he helped to establish the "LGBT municipality Parliamentary League."