I forgot the plot but I remember it being a historical type, the MC is a noble and the ML is somewhat a royalty (king/emperor??) i forgot if it’s shounen ai or straight up yaoi. But I remember the ML is obssessed with the MC to the point of locking him up even if the MC kept on sneaking to escape. There’s also a chapter that the MC managed to escaped and was caught by the ML and ended up being locked up in a room (a very extravagant one doesn’t wven look like a prison, simp ML indeed) and the two kept doing the deed until the MC just gave in (he actually like the ML too).
Can anyone recommend Isekai bls that you’ve read?
Isekai means being transported into a completely different world, regardless of how you get there. On the other hand, transmigration is a specific type of isekai where your soul wakes up inside another person's existing body.
It's like... Isekai is the general term, or broader spectrum, while Transmigration is the specific term, falls under Isekai.
I thought the same as you before, but as I read both isekais and transmigration stories, I've come to know their differences (⌒▽⌒)

But there’s a part where the MC (bottom) was very stubborn and didn’t followed the ML’s advised (I guessed it was corporate or company thing) and went to a board of director’s meeting (they have a bad reputation and allegations that they do sx orgy and drugs while having the meeting). The MC let his guard down and even drank the drink that was offered to him which cause him to be aroused (he was drugged). He was about to be graped by a guy in that party (a guy that the ML warned the MC about not to get close to) when the ML came to rescue him.
i think Swapping had a scene similar to this?
https://www.mangago.me/read-manga/swapping/
Took a while to respond since I reread it again, you’re actually correct thank youuu <33