The Problem Of Being Youngest

Jihun,Seungjun,Inseong and Youjin is member to new rookie group call KNK
They debut as four but after two years they company start enter the last member name Heejun that younger than jihun. Heejun though as new member will happy but then the member keep pushing him so what he do want to run away but the situation stop him from run away. People that want to kill him is back to find him and he might make his member danger because of him. Heejun never said anything or angry when the oldest said to do anything cause he afraid that they might be in danger because of him.