When North Korea lofted a missile over Japan in October, setting off emergency alerts across cell networks, Megumi Morohoshi made a decision: she was going to buy a bomb shelter.
Morohoshi had been concerned about the ever-present danger from Japan's earthquakes, and she had been wanting to expand the house to accommodate her three young children.
But the invasion of Ukraine followed by a barrage of North Korean missiles convinced her the threat was urgent.
