Arishihi no Watashitachi he is a "reversed pastoral adventure" set in a world where only lush nature and remnants of civilization remain. In this world, a boy who has lost his memory and a girl dreaming of adulthood weave their future together.
Himmels Crest, a frontier land forgotten by people. Shin, a young man who has lost his memory, was living idyllic days in this land. Elena, a slightly precocious red-haired girl aiming for the ideal adult. Dustin, a bright and humorous old man. For him, they were like lifesavers. Chopping wood, taking care of goats, housework, and laundry... Every day tossed about by an unknown environment. One evening, almost a month after he started living there, Under the starry night sky, Shin and Elena exchange words. Eventually, she speaks with determination. "I want to go to the city!" The elegant dream city, Sesnia. According to Elena, there is "something" there that brings her closer to adulthood. However, she doesn't have the courage to go alone. Therefore, she pleads. "This is the last selfish request from the 'child me.'" "―――Will you listen to it?" The firm determination conveyed through her eyes. The peace of everyday life was quietly changing color with one small decision. This is the story of "me" turning into "I," revolving around the trajectory until the transformation.