“…Unchanged child and adolescent suicide rates for more than 20 years indicate that suicide among children and adolescents is not largely affected by society, including recessions, changes in industrial structure (e.g., increases in non-regular employment), and suicide prevention policies. Major risk factors for suicide and suicidal behaviors in children and adolescents identified in previous studies include: individual psychological factors (e.g., depression and other mental health) ( Carballo et al, 2020 ; Dilillo et al, 2015 ; Picazo-Zappino, 2014 ), family factors (e.g., family dysfunction, often characterized by conflicts, poor communication, a lack of cohesion, and poor connection) ( DeVille et al, 2020 ; Gunn, Goldstein, & Gager, 2018 ; Picazo-Zappino, 2014 ; Ruiz-Robledillo, Ferrer-Cascales, Albaladejo-Blazquez, & Sanchez-SanSegundo, 2019 ), and school factors (e.g., school connectedness and school climate, including peer relationships and bullying) ( Gunn et al, 2018 ; Marraccini & Brier, 2017 ; Picazo-Zappino, 2014 ; Ruiz-Robledillo et al, 2019 ). Furthermore, it is reported in Japan that the frequency of suicides in middle- and high school students are the highest at the beginning of the school semester (i.e., early April and early September) and the lowest during the summer break (i.e.…”