I used to make topical, non series specific threads about this or that years ago; lets see if we can drum up some discussion!

Everyone here knows the typical seasonal anime is comprised of approximately %75 tropes on average. They aren't deal breakers per say, but they sure are noticeable if you've been consuming Asian cartoons/comics as long as we have. What are some of the most heinous tropes that almost immediately tune you out of whatever you're watching, and why?

I'll start with an example: The shounen light novel self-insert main character trope. This trope is where the main character of a series is awesome, the strongest, and surrounded by coveting girls, and still somehow above it all and uninterested in the world rending events they are apart of. Very popular in the mid 2010's with shows like Sword Art Online, Asterisk War, Chivalry of a Failed Knight, and Irregular at Magic High School. It just reeks of teenage escapism and a lust for prosperity facing minimal hardship and even less character. One youtuber years ago put it well: "these characters are designed to appeal to how young boys see/want to see themselves". The clumsiest degeneration of the "rule of cool". It also betrays a fundamental lack of skill in the author, as a character devoid of personality is so much easier to write than a developed one; perfect fodder for serialized light novels... After a point, I was more saddened by the personality seeking this kind of validation than repulsed the laziness of the trope itself.

Writing it out, it sounds more bitter than I had hoped...

That said, the trope is done well (or at least interestingly) in Classroom of the Elite, where the main character is portrayed as a sociopath and the system he resides within enabling his personality a fundamentally 'bad' one. I consider that the exception that proves the rule, though I've watched plenty of power fantasy in spite of this trope souring things.

Well, what are your hated tropes and where are they especially bad? Where have they been good, if ever?