Yuji is a young man who passed the entrance exam for university and moved to Tokyo from the countryside. In order to save on living expenses, his uncle Saeyama introduces him to a cheap apartment, but he is confused by how shabby it is. However, he meets his widowed landlord, Yui , and is captivated by her beauty. Despite having just lost her husband, Yui is always smiling and takes Kokoro of him in every way possible, and Yui No is drawn to her kindness. One day, when he goes to Yui No room, he accidentally witnesses Saeyama and Yui No passionately embracing each other...