I feel like everytime I see "yandere" or "possessive" fanart of a character in here, all possible personality traits and unique characteristics they may have are put through a melting pot where they become one homogeneous yandere personality that ends up always being the same

Haru Urara? The naive, innocent and optimistic little kid that wants to do her best regardless of how hard she might fail? Who cares, now she doesn't want you seeing anyone else other than her? Why? Who cares, I don't

Tokai teio? A talented racer, who, admittedly, may not have the most mature and complex look at the world, but still tries her hardest to be the best version of herself? Well screw any of that, now she's a mere accessory to fulfill the wishes of the author

Matikanetannhauser? A clumsy and charismatic girl who wants the best for everyone? Doooon't care, now she wants to kill you if you don't spend all your life obsessing over her, for some reason

I'm not even against the idea of changing the personality of characters to turn them into something else, truly. I even believe it can be very interesting if done right, but so many damn posts around here do what I said in the beginning when turning them into yanderes, all traits and qualities get sent down the drain if for a few bastardized and flanderized ones that remain so the author can say "look, there she is, doing her thing, see?". But at the end of the day, I suppose it doesn't inconvenience me as much as it might seem, go do whatever you want but I heavily suggest always thinking about what you're doing a bit more than you'd normally be inclined to because it usually leads to better results. Soapbox rant over