manhwa bl title?

basically there's a boy who has a sister, and his sister is a fan of this certain boy group. His sister was busy and asked him if he can go to the concert and get a autograph from the group. he was hesitant but decided to go anyways, after getting autographs he was asked by the manager if he could be the stylist of the boy group. he wasnt interested but still accepted the job offer sooner or later, one guy from the group was interested in him and and their relationship started to grow. thats all i remember hjjdgfuigyu :D