I’m kinda weeb in this regard so I’ll try and explain best I can.
I personally am big fan of kuudere characters. Characters that are generally emotionless. I like them because it feels like when they finally show or express their emotion it’s earned.
I now this is a favorite but I really dislike tsundere characters. Characters that generally express their emotions opposite to their targets. I understand that more than anything it’s usually a plot advancing device but still I feel like tsunderes shouldn’t always be the main girl when they always show anger even if it’s faux anger.
In a similar vein, there has been a rise of mesugaki characters / bratty. I also hate them because it’s basically just one sided humiliation and bullying