The first time he sang in front of an audience was at a cultural festival of his high school where he performed the song "I love you" by Yutaka Ozaki.

During the training camp of the audition he struggled with learning to dance since he had no prior experience but was assisted by Ryuta Hidaka (now member of Ballistik Boyz).

At last, Yoshino passed the audition as one of three winners out of 30 thousand contestants alongside Kazuma Kawamura and Riku Aoyama and became a vocal candidate for THE RAMPAGE in April 2014.

[8] There, he performed "Too Shy", a cover of Kajagoogoo's 80s hit and insert song of the film, with Makoto Hasegawa and Itsuki Fujiwara who played the remaining members of "Team Next".

[9][10] On September 7 in the same year, Yoshino was invited to the 29th Tokyo Girls Collection (Autumn/Winter) at Saitama Super Arena together with the main cast of the movie High & Low The Worst in which he stars as Tsukasa Takajo.