Career
He has competed at two Four Continents Championships. 2014-2015
Byun debuted at the Junior Grand Prix series in the 2014-2015 season. He placed 9th at the JGP Czechoslovakian Republic, where he got his personal best free skate and total scores.
At the JGP Germany, he placed 11th.
Back in of Korea, he came in third at a qualification event, the KSU President Cup Ranking Competition, which gave him a spot to compete at the 2015 Four Continents Championships to be held in Seoul, South of Korea. At the South Korean Nationals, he settled in 5th place.
As the last competition of the season, Byun participated in the Triglav Trophy. In the short program, he placed first and got ratified his first triple-triple combination, triple toe-loop-triple toe-loop.
2015-2016
Byun began his new season at the International Skating Union Junior Grand Prix qualifying competition held in South of Korea.
He placed first with a score of 161.39, which guarantees two Junior Grand Prix events. He came in fifth at a qualification event, 2015 KSU President Cup Ranking Competition, which gave him a spot to compete at the 2016 Four Continents Figure Skating Championships to be held in Taipei, Taiwan. At the 2016 Korean National Figure Skating Championships, Byun skated flawlessly, and he placed third after short programme as a result.
Then, he placed fourth in total, which meant he kept his spot as the Korean national team member for the upcoming season.
At the 2016 World Junior Championships he placed 29th in the short program and did not qualify to the free skating. Personal best highlighted in bold.