"Hey, Sis," Hideyoshi is on the computer while Yuuko is studying. Normally, she would berate him for his lack of study skills and complain that he's distracting her; indeed, she opens her mouth to grumble and do exactly this, but immediately shuts it again once she hears the rest of what Hideyoshi has to say: "What's the meaning of this word?"
It's so rare that he takes an interest in such things that Yuuko can't help but feel a little proud of her brother – and herself, even, as if all her lecturing and ambitious studying and all around good behavior was finally starting to rub off. So instead of yelling at him like she had originally planned to do, she asks in her sweetest possible tone, "What is it, brother?" (but thankfully still has her nose stuck too far in a textbook to see the way Hideyoshi flinches at this very unusual way she speaks to him).
"It's a foreign word, it's written in katakana," he explains first, before slowly attempting to sound it out. "Tu-win... Twin-ke-su-to?"
Twincest.
Yuuko recognizes the word immediately, despite how the Japanese language disagrees with English – the "c" is replaced with the "k" sound and the "s" and "t" have a vowel after them in katakana – but she's seen the word often enough. Definitely not from browsing foreign websites and reading BL manga, no, definitely not-
"What does it mean?" Hideyoshi derails her train of thought, worrying about how long it's been since Yuuko stopped speaking – she never stops speaking, if it gives her a chance to lecture him – and wondering if she even knew. "You know what it means, right?" he asked, just to make sure.
Yuuko, keeping her nose buried in her book – not because her eyes had widen when he said the word aloud, nor because her face had turn an unbecoming shade of pink, and most certainly not because she associated the word with inappropriate manga – resigned to answer. She had the quaint feeling that, if she didn't, Hideyoshi would find a definition on his own and she somehow couldn't allow that to happen.
"It's, uh, a very deep bonding between twins," she replied quickly.
Which wasn't actually too far from the truth. She hoped her brother would be satisfied with this answer, instead he pressed it, "Do we have twincest?" he asked innocently.
Yuuko had never wanted to beat her head in with a book so badly.
"Twincest," Akihisa repeated thoughtfully. Knowingly, even, with a coy grin on his face. "I know all about that."
"You do?" Hideyoshi asked incredulously. For once, even Akishisa knew something he didn't. After his question from the night before, Yuuko's answer had become very muddled and round-about, and somehow left him confused – Yuuko's long explanations were always confusing, but it was even worse when she constantly tried to change the subject for reasons Hideyoshi couldn't determine.
"Yes. Yes, I do."
"Hot blonds..." Voyeur added, as if that somehow explained everything.
For Hideyoshi, it just left him even more confused, though he finally began to wonder if it was really worth asking.
Word Count: 543
I dub this crack. Hideyoshi is so innocent.