Alleged bullying of kindergarteners at a licensed daycare center in Yokohama City; parents request third-party investigation from the city

The parents of a kindergarten child who attended a licensed daycare center in Yokohama City have requested the city to conduct a third-party investigation, stating that their child suffered PTSD (Post-Traumatic Stress Disorder) due to bullying by another child, including being given a letter with the words 'Die'.