I have a Splatoon 3 Oled Switch and my region i live in is United States and so is also the location of that switch, the language set in that switch, and the physical copy of the game’s region, but i got the switch from japan…all my runs for side order and regular splatoon 3 (the only two games i’ve speedran) are currently set as an American Flag Switch oled but does it need to be changed to a Japan Flag Switch oled? thanks for any help!

My understanding is the region flag should be set based on software region rather than the hardware one, so if you're using an NA copy of the game then USA/NTSC would be the region to use.

okay thank you so much for the help!!