In Japan, many couples have their weddings in October, November, March and May. And since June is in the rainy season, you can rarely see wedding ceremonies in this particular month.
While I was visiting Kumamoto in Spring, I had the opportunity to see a Japanese couple in their Japanese traditional clothes in front of Kumamoto Castle. The couple were having their prenup photo shoot with the castle and cherry blossoms in the background. They looked gorgeous.
In Southern Japan, Kumamoto Castle is a popular tourist spot, especially during spring because tourists get a chance to explore the old castle and enjoy the cherry blossoms at the same time.