I love those sequences where we start with a normal scene of two characters interacting as usual (talking, for example) and next panel they are in bed and have just had sex and one of them is all like "Eh? What happened? Aren't there some developments missing in this transition? Eh?"
They are literally the alpha couple of the series, even if the fandom is full of morons who'd rather drool over a couple of supporting characters you can't just fucking call this a rare pair
For some reason, there are people who think, a thousand years later, that the incest is a spoiler. If any ship is a wretched steaming piece of garbage, this is the paradigm of wretched steaming garbage ships. Every part of it is spoiled. It's rotten to the core.
Ain't you too angry for some reason? And it's a twist in the story so yes, it's a spoiler by definition. Doesn't matter how old the work is, it's still a spoiler so deal with it.