The weight of growing apart hits different when it's just six girls and a promise they couldn't keep. Four years collapse the moment they see each other again, and suddenly you're watching them figure out if they're still the same people who made that plan. This OVA doesn't need spectacle, it needs only the smallest moments: a shared laugh, an awkward silence, the specific ache of realizing childhood doesn't pause for anyone. It's about what you lose when you stop showing up to the same place every day. The time capsule never got made, but this is what happens when life makes one for you anyway.

Six girls from a neighborhood on the outskirts of Tokyo have played together at a little park on a hill since they were small. In fourth grade, they have to change schools. Before parting, they promise to bury a time capsule together, but the plan falls through and they go their separate ways. Four years later, the girls have grown up and are each living their own lives, with worries and troubles of their own. The story follows them as they meet again, and one day a miracle happens to them. The single episode OVA is a quiet slice of life tale about childhood friendship and growing up.