Greetings from Venezuela. I share your idea of not understanding what goes through the mind of a person who kills innocent children, here I feel that the concept of empathy does not work. I think that this person besides lack of education at home by not instilling positive values, had mental problems not attacked in time, well that's my humble opinion. At no time do I justify these acts of violence.
As for your post it is very descriptive and inspiring, it shows your effort to work with children, it takes us to beautiful landscapes of Japan and even tells us about certain aspects of their hard school culture. Excellent!