My long-term experience of studying abroad has led me to reflect on the relationship between “home” and “journey.” Every time we leave our hometown, we pack our luggage, and the suitcase thus becomes the most important companion of a traveler. Hidden inside the luggage, the house key symbolizes another side of the journey: no matter how far you go, it reminds you that one day, you will return home. Based on this experience, I designed a special key case. Its form is inspired by paper figures holding hands, and users can cut out the facial features of each figure, so that every small person represents a member of their family. This design carries a unique metaphor: •When the key case is closed, it appears as a solitary figure, symbolizing your lone journey away from home. •When the key case is opened, countless hand-in-hand figures unfold, symbolizing reunion and togetherness with your family. Thus, the key case is no longer merely a functional object, but becomes an emotional symbol: it embodies the dual states of departure and return, and re-expresses the concept of “home” in a tangible, tactile form.