He is one of the performers of the J-Pop group The Rampage from Exile Tribe.
[1] From 2011 to 2013, Iwaya was active as a support member of Generations.
In March 2014, he auditioned for Exile Performer Battle Audition[2] (to find a new performer for EXILE) but didn't make it to the finals.
[3] In October 2016, he made his acting debut with High & Low The Movie.
Gekidan Exile's Kanta Sato was his classmate.