I'll keep it all the way reality with you demon slayer is not special and I got tricked into watching it because of the stannery. I'm anti-One Piece in this thread and I'd STILL recommend One Piece over it.
Demon Slayer is really fairy tail/radiant level but with amazing special effects and a baby yoda type character to charm people over.
It got 4 other main characters brehs I can divide. 2 of them shyts were due. One was "nahhh" (zenitsu) the other is Inosuke. That's 1 fire character every 10 year average
Fire force I haven't seen much of but its made by the people who made Soul Eater (a show I like) and I hear it turns up something crazy in season 2 so I think its probably fine but other brehs would know better than me.
Dr.Stone hype died down a lot. Its very science & survival oriented but got jokes. The thing is if its your type of show you will 1,000,000% ride for it
but otherwise you gotta be in the mood for it imo.