What is the theme in Spring Snow by Yukio Mishima?

Passion and sensibility is a theme played out in the contrast between the indolent, indifferent Kiyoaki who suddenly awakens to his manhood with a tragic torrent of passion for Satoko, and his school friend Honda who studies law and provides somewhat of a grounded sensibility to balance Kiyoaki's obsessions and rush to personal ruin. By implication, then,.these two sensibilities may be read as signs of the transformation that is upon Japan. Honda's father, a Supreme Court justice, has studied in Germany and exalts reason over passion and emotion. Honda seems to follow in his father's footsteps in choosing the careful, rational path over his passions.