[1] Masakado was born in Osaka in 1996 and aspired to enter the show business after watching the 2006 TV series and 2008 film Kurosagi and admiring the lead actor, Tomohisa Yamashita.

[3] His mother and sister sent his resume to Johnny & Associates when he was in his third year of junior high school.

[4] An open audition for Kansai Johnny's Jr. (trainees) was held at the Osaka-jō Hall performance of Yamashita's concert Asia Tour 2011 Super Good Super Bad, and Masakado was able to go on stage with Yamashita at this audition.

[4] His peers include Ren Nagase of King & Prince and Daigo Nishihata of Naniwa Danshi.

[6] In September of the same year, he began his acting career with a role in BS Nippon Corporation's TV series Love Sickness and the Bastard Gang.