1. KADOKAWA Group's Dwango and Kadokawa Dwango Gakuen reported a cyberattack on their data center, resulting in the leakage of personal information from students, graduates, parents, and employees. 2. The companies are conducting an investigation with the help of a security firm, verifying the leaked information, and preparing legal action against those who spread it. 3. They are monitoring online platforms and seeking to delete unauthorized postings of leaked information.