Lee "Fury" Jin-yong originally played under the name ZetNjin for Prime Optimus, part of their starting roster consisting of himself, Grr, redKong, Gru, Luca, Hanlabong, and MKPS2. The team played in HOT6iX Champions Spring 2014, where they finished last in their group including KT Arrows, SK Telecom T1 K, and SK Telecom T1 S but notably took a 2-0 set off SKT T1 S.
After the Prime Optimus roster broke up and the Korean region switched to a one-team-per-organization format, ZetNjin, now known as Fury, joined Samsung Galaxy as their new AD carry, part of a starting roster including himself, CuVee, Eve, BlisS, and Wraith, playing in the 2015 Champions Spring Preseason. Samsung played in SBENU Champions Spring 2015 but placed last and were forced to play in the 2015 Champions Summer Promotion. Samsung qualified for SBENU Champions Summer 2015 when they placed first in their group by beating Prime Clan and Xenics. Samsung placed seventh during the regular season and missed playoffs but they qualified for the next season of LCK.
Samsung competed in the 2015 LoL KeSPA Cup where they were placed against Ever in the first round. To the surprise of many, Samsung was quickly dispatched 2-0. Fury left Samsung on November 30th. Near the end of his contract with Samsung, Fury was approached by Team Dragon Knights mid laner Ninja about a possible move to the team. Fury engaged in discussion despite being under contract and as a result was suspended for one month. Despite his temporary ban, Fury joined Incredible Miracle in late December, with Cpt Jack as his substitute. Incredible Miracle rebranded to Longzhu on January 3rd, 2016.
During the 2016 LCK Spring Season, Longzhu played with a 10-man roster, liberally using substitute players. Fury shared play time with fellow ADC Cpt Jack. Longzhu finished the spring split in seventh place with an 8-10 set record, missing out on a spot in the playoffs. Longzhu fared poorly in the 2016 LCK Summer Season, going 7-11 in sets and netting them eighth place, letting them escape relegations.