"Yellow Hyacinth means Jealousy. 

Sometimes I get really jealous of the ARMY's that get a chance to meet you. From time to time, I get sad when I see videos of you guys interacting with ARMY's. You must be even more handsome in real-life right? One day I will go and visit you, I promise."

Hoseok frowns as he reads the message. Holding the delicate flower between his fingers, he carefully folds the note back and walks into the building.

He doesn't like the thought of you being sad.