- Generic, bland, forgettable male lead. There's just nothing interesting about this character. I get that they're trying to relate to the audience, but it just doesn't work. Please put effort into your main characters.
- Contrived ecchi scenes. I have no problem with fanservice, but please don't make it so fucking trite. Also, when female characters blame male characters for something pervy that is clearly not their fault and hits them for no reason, which brings me to...
- Over-abusive female characters. I have nothing against tsunderes, in fact I like a lot of tsunderes. I'm talking about the ones that go too far, the ones that harp and abuse the main character and not in a friendly, playful way like when you're joking around with your friends.
- Over-the-top ecchi physics. It always bother me when female characters look like they're made of jello.
- Reverse harem. Nothing against it, it's just not my thing.
- Cutesy anime phrases like "Uugu~", "Desu~" and "Hau~". This is something that started to bug me after watching Little Busters. Maybe it was cute a couple years back, but now it's just getting irritating for me.
- Pervert characters who only care about breast size and only breast size, and treats any girl below a D like a man. I mean, I like tits as much as the next guy, but it's not all there is to a woman, and they're still very attractive. Seriously, what asshole thinks that way?
- Secondary, romantic rival characters. Usually either the male lead's cousin, sister, or childhood friend. It's obvious that she's never gonna end up with him, and by the end she'll just be extra, unnecessary baggage.
- Trap Characters (Males who look or dress female, to be specific). This one frustrates me but not for the reason you think. I just find it stupid, especially when it's definately a female design and it's just pasted on there that the character's actually a boy. It just seems like there's no good reason for it, like it's just there to throw men off. For example, the UTAU vocaloid Ritsu Namine. I'm calling bullshit, that's clearly a female. I don't care if his breast are missiles or some bullshit, there's no reason for it. He's (or she's) a freaking vocaloid. Why does a vocaloid need to be a trap? Or missiles for tits? I mean, there are some traps I like, mostly because they have context, but having a character be a trap just for the sake of it is just stupid to me.