[12] During his time in high school, he met Matsuura Masato, who was the manager of the rental record store “Tomo & Ai” in Kamiooka back then.

After graduating from high school, Hiroyuki refined his dancing skills while working at Disco Maharaja and Circus in Roppongi.

The scout who was watching the contest suggested that Hiroyuki should become part of a dance team from the program, which led to the group LMD being formed.

[12] In 1991, the dance team Japanese Soul Brothers was formed, which included Igarashi as a member.

On April 3, 2013, Hiro announced that he would retire from being a performer within the year and concentrate on the producer business.

Hiro himself expressed his goal to center the performance on children, who embody Japan's hope for the future, and to make it the highest priority "that the children will experience something they can take with them for the rest of their lives and to have it be an experience that will inspire them to build a bright future together".

[19] On September 14, 2012, it was personally announced by Hiro and Aya Ueto that they registered their marriage after two years of dating.

[31] On April 17, 2014, Hiro attended the "Spring Garden Party" hosted by the Emperor and Empress of Japan.