vestige; a trace of remnant of something that is disappearing or no longer exists.

-The story about healing, growing and moving on from the past when one learns from another's experiences-

Memories of the past surrounds Taehyung as he reminisces about his old summer school days and a boy named Jungkook.

"Thanks Taehyung for calling out to me."

Jimin comes back to his high-school, after a month's detention. He goes back to his normal life, which was of a bully until a mysterious trail of letters leads Jimin on a magical scavenger hunt through the hidden world that exists right in his high-school which he had never discovered before. The mail trail is work of an anonymous guardian angel, who changes his life completely. But who is this person? And why did she chose him? With each letter, secrets are revealed and bonds are formed - as Jimin learns about friendship, care and finding the good in people in this cruel world.

"Umm.. I will earn a lot of money and build a big house. Jimin will take the first floor, I will take the second and you can take the third. We will listen to our favourite songs like we do now and I will cook for three of us."

"Sounds nice."

A story in which a youthful dream and the harsh reality of growing up clashes causing a promise to break, a friendship to fade away and few words left unsaid.