As for me, the tattoos I'm considering are these:
#1 - Joestar Birthmark tattoo, this is the birthmark all JoJos have. The MC of my story, Shizuka Joestar, however does not have the mark because she was adopted into the family and got a tattoo of it. This idea was inspired by my own desire to do such a thing! Maybe it's about time I made it true, considering it's been almost 5 whole years of me really wanting that and I doubt I'll regret it at this point.
#2 - Straw Hat Pirates jolly roger tattoo! OP has been my favourite series since 2013 and at this point I can't give it up at all, it's been precisely 7 years since I got into this lovely series and I want that known. But where would I get such a tattoo though? I don't know... I was thinking maybe on my back, similiarly to how Ace has the Whitebeard jolly roger on his back but it might be too much, right? So I'm still considering that.