They both hate each other---the rivalry goes from the times of their school years and they never knew when it got serious and it got way too serious without even seeing eachother, just in their hearts. Also---their families have an ongoing conflict as well and their ego also boost up the rivalry between the two but it's been years since the two have seen eachother besides in the pictures and when they do---they didn't expect it to---be like this.
Jeon Jeongguk and Kim Taehyung consider eachother enemies.
