For a few weeks every spring, a hillside in Japan turns the exact color of the sky. Hitachi Seaside Park, Ibaraki Prefecture. 4.5 million nemophila flowers bloom across Miharashi Hill. Tiny blue cups so dense the ground disappears beneath them, rolling toward the Pacific like a second heaven laid low. Peak bloom usually hits late April. Families spread picnics at the edges. Children run through paths cut between the flowers, shrieking because the blue seems to go on forever. A Japanese mother kneels to photograph her toddler sitting in the blossoms, both of them laughing. An American family walks the ridge trail, stopping every ten steps because the view keeps getting better. The park planted these fields to give the old mining coast something gentle to look at. Now half a million visitors come each season. Not for rides or shopping. To stand inside a color so pure it fills your chest. You walk out still seeing blue behind your eyelids. The color follows you home.