Press release
https://ajigohangamespressenglish.wordpress.com/
List of media in which survival methods were introduced
AUTOMATON
https://automaton-media.com/articles/newsjp/20190125-83946/
https://automaton-media.com/articles/newsjp/20181225-82147/
https://automaton-media.com/articles/columnjp/20180101-60334/
Game*Spark
https://www.gamespark.jp/article/2019/01/26/86908.html
Gamer
https://www.gamer.ne.jp/news/201901250059/
Game8
https://game8.jp/articles/556987
Niconico news
https://news.nicovideo.jp/watch/nw4725443