Yotsunoha (よつのは)

A quest in search of our school memories.
At the end of summer break, our school closed down. On our last day together, we put our true feelings inside a time capsule, and promised to meet again in three years. The promised summer came. With it came things that did and did not change between us. The quest in search of our school memories has begun.
What kind of smile will they have once we meet again?