Oh but they do!! An example is "No doubt in us" where the brother of the ml has something going on with the court magician(?)!!! They didn't appear much but they very much was there and every time they show up was hilarious cause of their obvious flirting lol. No doubt in us is a good manhua btw I really recommend it XD.
also, unfortunately I would have to decline cause I hate watching live actions of anything cause they always ruin the story. Reading is superior<3
https://www.mangago.me/read-manga/for_the_beautiful_juliet/
Sorry, I forgot to add the link (´-﹏-`;)

Really really really want to find/read some good stories where there are side queer couple who doesnt die. Like, they're not the mcs. literally js extras who just happens to be queer and their whole personality isnt the fact that they're queer. maybe they're js the funny friend or the sibling or whatever. pleasee help me satisfy this cravingg!!!