As summer draws to an end, many begin to feel the post-holiday blues. But for some children, this time of year triggers a different level of anxiety: the terror of going back to school.

The first day of September is the deadliest day for troubled young people in Japan, according to a 2015 white paper published by the Cabinet Office.

The day when most elementary, middle and high school students return to class has caused a total of some 130 people under 18 to kill themselves over the past four decades up to 2015, the paper said — the most compared with all other days of the year.