WW2 Era Postcard written by Japanese Student Pilot
In the postcard he writes about wanting revenge and learning the “special Technique” to defeat America and Britain. One can only wonder what he means, possibly the Kamakazi. A rough translation below:

Front side: a light bomber flying over the heavy sky.

Back side : "From Mr. Shiraishi, in Nakanishi-unit under Izumo-unit of Saitama Pref. Imperial Japanese Air Academy student corps, to his friend"

"I feel deep regret on four times of outrage by American army. Was your family all right? Thank you for your help during my vacation. My section announced that I become a pilot this time. I’m training the special techniques to defeat America and Britain, and expecting the day of revenge."

The “outrage” he was speaking of was likely talking about American Air raids.
WW2 Era Postcard written by Japanese Student Pilot