Lee "BBuing" In-yong was born in Seoul, South Korea on May 31, 1995. He started gaming in the first grade, and his first game was Crazy Arcade. He began to play League of Legends when he was almost 18 years old when he got bored of the Warcraft map Chaos.
BBuing joined the initial Incredible Miracle 2 as their support in March of 2013. The team qualified for HOT6iX Champions Summer 2013 but only managed to win one game against MVP Blue. He moved down to sub for the team later in August.
BBuing was moved to Incredible Miracle 1 as a support player in March of 2014. The team played in HOT6iX Champions Spring 2014 but missed out on playoffs after earning a 2-4 record and placing third in their group. The team also played in HOT6iX Champions Summer 2014 where they only managed to win one game against SK Telecom T1 K. When Incredible Miracle restructured to combine IM1 and IM2, BBuing was left off the roster for unknown reasons.
In March of 2015, BBuing joined the new roster of MKZ. They competed in Challengers Korea Summer 2015 but placed last overall with a 2-8 record. BBuing switched to jungle halfway through the tournament.