Taehyung was 6 years old when he met Hoseok for the first time. He got lost in a carnival and cried alone.
A 7 year old Hoseok comforted him, wiping the tears away with a mint handkerchief.
That was the first and last time they met. Taehyung could never forget the hero that saved him.
10 years had passed and Taehyung still held onto the handkerchief, which was the only thing that made him feel " close " with Hoseok.
Until one day, Taehyung met Hoseok again in a similar occasion as how they first met.