He is represented with Stardust Promotion and his record label is Warner Music Japan.
[3] Later on Sashida aimed to become a professional during his first year at high school,[4] and started going to voice training.
[3] In 2010 he applied to Warner Music Japan's Voice Power Audition: 100-nen Vocalist o Sagase and won the Grand Prix.
[5] Sashida later started his major debut with the single "bird / Yūyake Kōzokudōro" in 12 October 2011.
[6] In 2012, Sashida made an appearance as a guest artist at the annual touring ice show Fantasy on Ice, where he performed live with figure skater and two-time Olympic champion, Yuzuru Hanyu, to the song "Hana ni nare" (lit.