A promise made under a tree three years ago finally gets answered. Four childhood friends return to the place where they buried their hopes, and the OVA doesn't waste time on plot mechanics, it trusts that reunion itself is enough. Flashbacks do the real work, letting you feel the weight of time passing and what each of them became while they were apart. The romance isn't a subplot fighting for screen time. It's the entire reason you're watching two people stand in a school courtyard and realize that growing up didn't have to mean growing away.
Four childhood friends return to their abandoned school on the exact day they promised to reunite three years prior. Yuzuki, Matsuri, Nono, and Makoto walk the empty hallways of Mochitsuki Academy searching for the time capsule they buried together under a tree, a physical anchor to the bond they swore would endure no matter what life threw at them. But time changes people. The years of separation have pulled them in different directions, and walking through familiar spaces as different versions of themselves creates an unexpected tension. Conversations start easy then falter. Laughter masks uncertainty. What was meant to be a simple, joyful reunion becomes something more complicated, more honest. This is a quiet story about the weight of promises and how growing up doesn't necessarily mean growing closer. There's warmth here, genuine affection between these four, but also the melancholy of realizing that some connections, no matter how carefully preserved, can shift beneath the surface. It's reflective and gentle, the kind of story that lingers after the credits roll.