To install:

1.Install RMM
2.Unpack all the files inside the RMM zip file into your Yakuza 0 directory (needs to be in media)
3.Run RyuModManagerCLI.exe once
4.Create a file in the mods folder with whatever name you wanna put it and unpack 46a2.acb into the folder
5.Put the name of the folder in the ModLoadOrder.txt
6.Run RyuModManagerCLI.exe
7.You have installed the mod