It's a oneshot where Sunghoon got to know about that fans thinks that Sunghoon is fat-shaming Sunoo which makes him guilty and so he starts to make distance from Sunoo.

Welcome to Highway 1009! Update: Complete. There's a 2nd Book out now! STARTED: OCT 2020 ENDED: MAR 24 2022 ‼️Translations and copied ideas without my permission will be reported immediately‼️