Lee "CuVee" Seong-jin joined Samsung Galaxy as their starting toplaner along with teammates Eve, BlisS, Fury, and Wraith when the team formed a new roster following the change to one team per organization in Korea. At the time he was also on one of the top Challenger ranked 5s teams on the Korean server, 꿍이라니. 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.