tokyo-night-linux/.config/kanshi/config

{
  output eDP-1 enable mode 1920x1080@60.008Hz position 0,0
}

{
  output "Samsung Electric Company U28E590 HTPH402827" mode 3840x2160@60.000Hz position 0,0
  output eDP-1 enable mode 1920x1080@60.008Hz position 0,2160
}

{
  output "Goldstar Company Ltd LG ULTRAGEAR 103NTXR8Q458" mode 2560x1440@99.946Hz position 0,0
  output eDP-1 enable mode 1920x1080@60.008Hz position 0,1440
}