First we are going to create a shortcut to the launcher
Click on the gear icon






Hover over "Manage" and click "Browse local files"




















Now it should bring you here






Right click on "Desktop Mate"

If on windows 11, click "Show more options"
Click "Create shortcut"

If on windows 10, click "Create shortcut"

You should now have the shortcut






Now, select only the shortcut and do Ctrl + X
Next, do WindowsKey + R and it should bring up this menu











Paste either of these this into the box (this is the windows start up folder)
shell:startup
C:\Users\Username\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup
(Only paste the shortcut into one of them!)

Finally, paste the shortcut into the folder by doing Ctrl + V

Ta-da! Now you can see miku every day without launching it yourself!

Notes:
Steam has to auto launch on start as well for this to work.
If it does not paste the shortcut into the start up folder, go back to the shortcut and copy it again.