People are claiming that Kyoya is canonly gay. No, no, he's not.
The manga...Bisco Hatori, really...never, ever, ever stated anywhere that Kyoya was canonly gay. I don't think she ever stated anywhere in the manga if the large majority of the characters were LGBT. The only canonly LGBT character is Ranka, who is actually bi. There's also Kaoru's case, but I honestly can't remember if Bisco Hatori said that he's canonly gay or if she changed it. Haruhi might be heavily implied that she's non-binary (but ngl, I can't remember).
But other than them, none of the other host club members or side/supporting characters have been canonly stated as LGBT.
So no, Kyoya is not canonly gay, people. You can headcanon that he is, or headcanon that he's asexual or whatever...I headcanon that he's bi, mainly because the manga pretty much kinda implies that he's into both guys and girls.
But that's all that is: headcanon! Not actually canon! Please, research the difference and then keep it mind.
Thank you for coming to my TED talk.