"PSO2" CERO rating changed from "C" to "D" in around April.
https://www.cero.gr.jp/en/publics/index/17/
https://www.cero.gr.jp/en/files/libs...0029255557.gif
https://www.4gamer.net/games/120/G012075/20200214124/
http://pso2.jp/players/news/25674/