After graduating junior high school, Shiono helped his parents' restaurant instead of going to high school.[2] While recommended from the store customers and his mother, he was a candidate in the 24th Junon Super Boy contest, which was held in 2011, he was awarded the Special Jury Prize and the Prize Aoki.[1][3]
In March 2012, Shiono became affiliated with Oscar Promotion.[2] In 2013, he appeared in Zyuden Sentai Kyoryuger as Souji Rippukan/Kyoryu Green. In the film Zyuden Sentai Kyoryuger Returns: Hundred Years After, he played Soujiro.
In 2016, Shiono performed the starring role of Masamune Date in Sengoku Basara 4 Sumeragi play.[4]
In November 2017, Shiono became vice leader of Aoyama Omotesando X Male Troupe.
On 6 April 2019, Shiono played Kansuke Yamamoto role in Shingen-ko festival. Kansuke Yamamoto was known as a brilliant strategist and particularly known for his plan which led to victory in the fourth battle of Kawanakajima. Shingen-ko is the Guinness-registered Largest Samurai Festival in all over the world. Also, Shiono met Nagasaki Prefectural Governor to discuss about this important traditional festival on 5 April.
On 28 February 2021, Shiono left Oscar Promotion and Aoyama Omotesando X.[5] On 12 August 2021, Shiono joined LDH Japan.[6]
Shiono's hobbies are playing tennis and he is good at cooking crêpe.[1] He has a motorcycle license.[7]