Let's go together.

Kanata and Hiiragi meet at a university mineral club. The two deepen their bond through their shared hobby and realize they are special to each other, but lack the courage to confess, and their miscommunication continues. Eventually, the two fall in love with each other, but societal prejudice and isolation create a world for only the two of them. Seeking an ultimate love undisturbed by anyone, they make the decision to risk their lives and head toward a "world for just the two of them." In the final moment by the seaside where happiness and despair intertwine—the two lovers quietly disappear from the world forever to be together for eternity. This is a sad and poignant story of two people whose love, the deeper it becomes, the more they are estranged from the world.