Number (4): Everything in this space must add up to 4. The answer is 5-3, placed vertically; 1-1, placed horizontally.
The small piece of carved thin bone bears an inscription. Experts would expect it to read if complete: "DOMINE VICTOR VINCAS FELIX" or "Lord Victor, may you win and be lucky."，更多细节参见heLLoword翻译官方下载
，这一点在Line官方版本下载中也有详细论述
Appendix II: Linear RGB Space
"Bad Idea Right?" by Olivia Rodrigo (Episode 4)。safew官方版本下载对此有专业解读