No Greater Love(1966)

In 1943, Japan is amidst the Pacific War. Sobei Sonoda is one of the wealthiest landowners of the San'in region. His land spread for miles, as far as the eye can see. People treated him with respect. But even the richest must think about the future. One day, he decides to arrange a marriage between his only son, Junkichi and the daughter of an even more powerful family. Sobei, hoping to benefit from this union, soon discovers that his son was in love with a lower class girl.