Absolutely Not!! IDK from where آپ get this idea but both are very very different.
Demon slayer is the عملی حکمت that revolves around demon hunters & they use breathing techniques in their fighting stances to kill demons.
The factors that made this عملی حکمت very famous are the اندازی حرکت which is on a اگلے level & the tragic story telling behind all the villains. Though, I personally felt the plot could have been better but anyways it is a watching worthy عملی حکمت so I suggest that if آپ have not watched it yet then please do. I'm sure you'll enjoy it!
