I don't think so! It's pretty normal, especially nowadays, guess it depends on how deep it is because then it starts to get unhealthy?
But a lot of adult play dating simulators, make tons of risqué art of characters they like, rambling about the characters and wishing they were real, especially with anime characters. I have fictional crushes myself! I wouldn't say I obssess over them? But whenever they pop up I get happy and stuff, helps me figure out the kinds of personalities I like too.
I'll say this. I used to be REALLY into this guy that I came across from a manhwa I read back in middle school who I still like to this very day! I'll admit I used to fantasize a lot about him back in middle school and get all giddy thinking about him (ah...puberty), I still have the screenshots of everytime he popped up saved somewhere lmao xD
I'll say I don't fantasize much about characters I find attractive but I'll favor them and be willing to spend money for merch of them! I have a ton of characters I found attractive that I can't list haha!
I also really loved Tanjiro from Demon Slayer when I was younger! I mainly liked him as a character but also thought he'd make a wonderful partner too. He's the reason I love empathetic and nice characters.
Ugh he's so cute
