this is a lovely theory but its wrong and heres why:
https://x.com/IN2128J/status/1821263620824793255 - this is august 7th (my time) for M Countdown JJAM Pre-Recording, where it was revealed that jeongin has oreo hair again
https://www.instagram.com/p/C-R5nzbhkD8 - and this is pictures of jeongin with blonde hair durng lollapalooza chicago, which was on august 2nd
With this we can conclude that jeongin dyed his hair between aug 2nd-7th, meaning that the erliest plausible filming date of content that we see in your first link is august 3rd.
Stays discovered peeks of jisungs tattoo around my birthday. which is july 18th btw. heres me freaking out about it. Then also i think there were some hints in their milan video too, and also around when they were filming ccb? i cant bother to find the right sources for all of these !! BUT my point is that even if we assume jisungs tattoo is the freshest around my birthday (which is, once again, july 18th. rememeber this.) (which is also insane because who performs with a fresh tattoo?) by the time that its august 2nd, it would not have been painful anymore, and the reaction in your first link would not be because of it!
jisung might still have been in the stage of putting creme on it and such (usually you do that for arouond 21 days after the tattoo is done), but it would not be painful or sore anymore. ALSO yes here im assuming that jisung got all 3 tattoos done before my birthday (july 18th. youll be quizzed next year) at around the same date !! heres me freaking out about when he confirmed what his tattoos are: https://x.com/cloudrages/status/1816856040643920126 meaning he had all those 3 there by then. and even if we assume OKAY maybe he got the compass (big and ouchie too) done at that exact date (july 26th. 7 days after my birthday), it would Not be painful anymore a week later!!
In conclusion. i love your theory dearly actually (im being serious) but i dont think that that reaction is because of soreness! i think hes just silly and a little gay <3
BUT i do believe that your second link might be tattoo soreness? Although if i were jisungs tattoo artist i would tie him up and keep him still for at least a week (around the time that second skin peels off naturally! "second skin" is a tattoo term for the sticky foil applied on a fresh tattoo that protects it) after putting a new tattoo on him. excessive sweating can cause infections because tattoos are abrasions basically. (the tying up isnt necessary but you know my preferences by now) So. for his sake and for all our sake i hope that if he did get a new tattoo, that he had enough time to let it heal properly!!
sorry for shooting your theory down this harshly. originally i was doing research to match the time to PrOVE what youre saying, but the facts speak against it (most likely. i dont know what im doing and dont believe anything i say ever thank you)