1. Jojo's Rudol von Stroheim is, well, a Nazi
Nazis are bad. That's a pretty acceptable blanket statement, as evidenced by Indiana Jones, Saving Private Ryan, and every video game released between 1999 and 2007. You'd think, then, that no mainstream entertainment would possibly try to make a Nazi character seem heroic, dependable, and likeable.
Of course you'd be wrong. Jojo's Bizarre Adventure knows no boundaries surrounding good taste, and that extends to racist, homophobic, probably tax-evading war criminals from the mid-20th century.
Enter Rudol von Stroheim. This Mexico-based human garbage appears in part two of the greater Jojo's saga -- sometimes known as Battle Tendency -- in which he willfully summons an ancient super-man that eats vampires, and plans to take over the world.
That's already not a great start, but Jojo's Bizarre Adventure takes it further. The super-man in question (whose name is Santana, in case you were wondering) was awakened using civilian prisoners -- prisoners that the Nazi major ordered executed for a laugh, in addition to his experiments.
So we're pretty damn sure that von Stroheim isn't some Schindler's List-type double agent that you might otherwise see in 1938 Germany. He's an all-around bad dude. Even so, the character is repeatedly cast in just about the most heroic light you can expect from someone not named "Jojo" on Jojo's Bizarre Adventure.
He "sacrifices" himself to incapacitate Santana, thus saving the world. Later, he fights alongside Jojo as a cyborg when more super-beings are uncovered, and becomes a recurring protagonist on the show. All of that Nazi stuff just kind of gets swept under the rug, as even by the end of Battle Tendency he's shown to be decent friends with Joseph Joestar -- the Jojo of that era. Thus it remains a not exactly comfortable relationship for viewers to reconcile.
2. Sailor Moon's Chibiusa is a little too close to dad
Sailor Moon was a massively formative series for a lot of people. In contrast to the male-centric action anime of this, and... Pretty much every era, this show gave women the spotlight. It wasn't just in supernatural combat, either, as Sailor Moon ran the gamut of dramatic themes to make for a much more textured experience than your basic action-adventure series.
One of those avenues for conflict was, of course, romance. In addition to two Sailor Senshi being involved with each other, the rest of the cast got up to the business of longing stares, and heavy breathing as well.
Probably the most iconic of these relationships (besides the aforementioned magical office romance) was between Sailor Moon herself, and perennial damsel in distress Tuxedo Mask... Or whatever alias you want to call the two of them as they hop from one time travel shenanigan to the next. Actually, it's time travel that makes things decidedly awkward between the puppy love-struck pair.
Early in the series, the character of Chibiusa is introduced into the magical girl mix. This at-first wannabe soldier is a good deal younger than the main cast, being only a student in elementary school. At least it seems that way at first.
What with this being anime and all, it's quickly revealed that Chibiusa is the daughter of Usagi and Mamoru (Sailor Moon and Tuxedo Mask) circa 1000 years in the future.
Despite this fact, Chibiusa is pretty much in love with her younger father. Both the Sailor Moon series and manga do a great deal of dancing around this Elektra complex, and a great deal of not dancing around it at all. Such as when Usagi out-and-out tells Mamoru that Chibusa is in love with him.
It is of course ridiculous for Usagi to be jealous of her own daughter, but she might have actually had a good reason. Eventually, we get a glimpse of Chibiusa's future self, a.k.a. Rabbit, a.k.a. Black Lady (enough with these alternate names already...). Besides being evil, this version of Chibiusa is way more directly into her younger, hotter, and also mind controlled father. To the point where she drops all pretenses, and just macks on him in front of her own mother.
So much for dancing around the issue.