How do you go about doing this?
1) Download the Special K global injector from this site:
https://special-k.info/
2) Open the program and click the Library tab at the top
3) Right click in the game titles section to the right and select add game
4) Add the path to the yuzu.exe file
5) Turn HDR on in your Windows Settings
6) Click on the Yuzu title in Special K
7) Click the "Launch" button in the bottom right
8) Open Xenoblade 3 or any of your other games
9) Once game has launched, you should see the injector information at the top of the screen
10) Press CNTL+SHFT+BKSPACE to open the Special K menu
11) At the top click the HDR option and then go to HDR set up
12) A new box will open with "none" checked by default
13) Check "ScRGB HDR" and also ensure that "full luminance" is checked
14) Special K should have a yellow message indicating a restart is required
15) Close the game and the Yuzu emulator and relaunch it from Special K again
16) Launch your game and again open the Special K menu
17) Again, click HDR and then HDR setup
18) Now native HDR has been implemented into the game
19) Tweak the top 3 values to your liking: Peak White Luminance, Paper White Luminance, and Middle Gray
20) You will see the changes occurring in your game in real time (I recommend choosing an area with lights such as near an item to pick up)
21) For my LG OLED TV I have the following settings: Peak White 1000, Paper White 500, and Middle Gray at +4.5%
22) You usually want Paper White to be no more than half the value of Peak White
Enjoy! Let me know if you have any questions! The HDR really does take the game to another level!