There's this BL where the MC who's also the seme attracted to uke because uke has a beautiful neck, he confessed he likes uke and uke accepted. Uke knew seme's preference over neck but over the time he worries seme would no longer like him if he grows out of it (they are teenager or early 20s). I forgot the name and lost it, any clue?
This one maybe? (first story) https://www.mangago.me/read-manga/saiaku_no_jinsei/
Like, all of those characters in the story and only Yoojin understands??? Taewon's fear could be simply put as:
Imagine you're a weak frail human and you met someone who could put you into death by merely putting their head onto yours. Yes, they may try to control their power, but who are you to know when they would lost it? Taewon realizes his privilege as someone powerful and he tries to put himself in non-S rank positions, they would be terrified at him. His character actually very interesting, between all those powerful S-ranks, only him who could see that just by accepting his and the world current fate wouldn't erase their fear.
And everyone sees him as the weird guy, LMAO.
They probably do understand where he's coming from and empathize, but they personally would never do that so they see him as a weird guy