As the game points out, not only through the implication of the message, but through an extensive codex entry, Torii gates ...

A 65-year-old U.S. citizen was detained by Japanese police on charges of vandalizing the wooden torii gate of one of ... an investigation after finding a symbol meaning "death" in two places ...

the gate also serves as the symbol of Miyajima island, where the shrine stands. The current gate is the ninth-generation torii. The first one is believed to have been built during the rule of ...