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 childhood friends gather at their favorite park one last time before life pulls them in different directions. They make a pact to bury a time capsule together, a tangible promise to reunite someday. But plans fall through, and the capsule never gets buried. The moment passes. They scatter into separate schools, separate lives. Four years later, the girls find their way back to that same park. Older now, shaped by years apart, they're different people wearing familiar faces. The reunion isn't a triumphant homecoming but something quieter and more complicated: a collision between who they were and who they've become. There's warmth in recognizing each other, but also the strange distance that time creates. The time capsule that never happened haunts this reunion. They wonder what they would have written in it, what they promised themselves they'd remember. Now they have a chance to finally bury it, to close a loop that's been open for years. It's a gentle story about growing up, drifting apart, and what it means to come home to people who knew you before you knew yourself.