N.tic (엔티크) is a four-member boy group under Yechan Media. They currently consist of Jion, Sangwook, Seunghoo, and Jinseo. Their original line-up had Hiemin, but he left and Sangwook took his place. They changed their name from J-Peace to New-Ace, and finally to N.tic, which stands for “New Trend Icon”.
They debuted on February 26, 2018 with the single “Once Again”.
Source: kpop wiki