In his junior high school he was elected to be one of the representative players of Nara.
[1] In 2009, Yamamoto was submitted by his mother to the Mitsubishi Pencil Style Fit Boy Contest and won among 1,500 people.
In the summer of 2013, he was elected in the nationwide audition for Fuji Television's United States of Odaiba and was placed in charge of Orange.
[7] Yamamoto competed twice in the Obstacle Course contest program Sasuke, however he never completed the First Stage.
He was disqualified in the 2014 tournament after failing the Jump Hang Kai and from the 2015 tournament after failing the Orugōru (translated as the Music Box) before he could reach the Jump Hang Kai again.