@Hurt soldier the best friend's heart is (sort of) in the right place but the road to héll is paved with good intentions. The best friend puts Dojin on a pedestal and at the same time feels an underserved ownership over him and his decisions. He's crossing the line really far by doing this. Dojin is old enough to make his own decisions and the friend is acting not just out of worry and loyalty, but a heavy dose of entitlement and jealousy. It's not right.
check out my 19 days fanfic on ao3 :)