
Seungho isn't telling people what he suspects. I mean, it would be in pure Seungho fashion to act out of jealousy and possessiveness if he acted out of rage and just locked Na-Kyum up to imprisoned him, but Seungho is also very sharp. Na-kyum would willingly leave a shoe behind as he tried to leave Seungho, and then faint on some mountain trail while still warm?
I can only hope Seungho puts two and two together in thinking this is weird. He should know Na-Kyum's habits if he tried to leave, just like he should know how warm he would be if he made it to the mountain trail and fainted.
I think he didn't let anyone talk to Na-Kyum, not because he's punishing Na-Kyum, but because he can't trust his servants for the time being and needs to get the story from Na-Kyum before he's convinced to not say anything. That's probably why he's keeping a close eye on Na-Kyum in that last panel.

So this smartass Seungho didn't notice that the footprints were too big and deep for being Nakyum's. Also he could have followed them. They are all smart in this story i guess, the assassin first deciding to kidnap the guy (instead of immediately kill him as he did with the servant no one cares about) while snowing and leaving clear traces.
In Seungho's chamber Nakyum would have been safer, and SH could have kept an eye more easily, but the author had to create the unpteenth misunderstanding for drama reason
btw when he was kidnapped, they were at the doctor's house, it's also just a coincidence the assassin found Nk awake after the sex, there are actually a lot of plot-holes

It's not clear if he saw those things yet since we only know that he's keeping Na-Kyum in a secluded area. I see a lot of comments asserting things that haven't happened yet. This is why I only stated that I hope Seungho is sharp enough to notice all those things, because his character is also that which loses his temper very easily. However, in his defense and towards my theory, he didn't act out like he wanted when he first saw Na-Kyum laying there. His hands could have gone around his neck or caressed his face, but he did neither and instead walked away only to have given the order to never open the shed door and therefore appearing in the last panel; standing watch over a sleeping Na-Kyum. I can only suspect Seungho needed time to think some things through without disruption...which is probably a crude way of rationalizing why he put Na-Kyum in the shed.
The assassin has been watching Na-Kyum for an opportunity. Remember he actually had that one servant watch him in order to lure him outside, but that guy didn't work out. So he got rid of him. I wouldn't call it a plothole if you're counting on someone to care for a lowly servant that was practically dismissed of his duties by a noble. In context, no one would look for this guy. Na-Kyum however is different. The assassin is a seasoned professional and could read Jiwon's jealousy. He knew Jiwon didn't have it in him to kill someone. He's just someone who's heartbroken. That's why he only kidnapped Na-Kyum and told Jiwon of the things he could do to get rid of Na-Kyum. This is why the assassin simply left Na-Kyum somewhere where he could be found.

We know for sure he didn't immediately notice the difference in size of the footprints, and SH being an experienced hunter should have known those traces couldn't belong to Nk. I think he had enough time to rationalise it's impossible NK escaped.
The assassin acting as a morality pet for the noble who looks down on people like him but still killing a servant in cold blood is a bit hypocritical...it's clear he only kidnapped and not killed him because of plot reasons. Jihwa paid him for killing an innocent and for stupid reasons like jealousy, so he showed for the start NK's life wasn't even worth for him, why the assassin should care for a noble's morality and guilt?
The plot-holes are the footprints, a seasoned assassin deciding to act when it snows (so it's easier to be traced-down) and when Seungho was close to his target (he could have woken up, I assume NK cried when the killer caught him?) , a seasoned assassin talking with his commissioner in front of the victim and then releasing him...unless NoName thinks Nakyum will never talk about the kidnapping (he probably heard Jihwa's voice too) or that he will never be believed, but this means that saving Jihwa's morality will only lead to Nakyum being hurt. C'mon this kidnapping plot was poor planned and pointlessly dragged for several chapters and its only reasons were to create another misunderstanding between the main characters and a fanservicey side-ship.

I disagree with believing this arc didn't amount to anything besides another hate-sex scene from Seungho. I think this arc provided a few things for character development, especially for the relationship between Seungho and Na-Kyum as well as settling Jihwa's feelings for Seungho. After all, this arc wasn't about the assassin kidnapping Na-Kyum, it was about Jihwa's jealousy and how far he will take those feelings.
During the time Jihwa had to wait we saw:
Na-Kyum trying to run away and giving up.
Na-Kyum giving in to the words of his teacher and letting Seungho have his way with him.
Seungho investigating the reason behind Na-Kyum's obedient behavior.
Seungho realizing he doesn't want obedience from Na-Kyum.
Seungho realizing he's captivated by Na-Kyum.
Seungho trying to deny those feelings to his peers.
Irate servant treating Na-Kyum badly (talking down to him, putting rocks in his food, ultimately attacking him).
Seungho lashing out if others touch Na-Kyum.
Jihwa having a nightmare where Seungho hates him for killing his lover.
Jihwa being told by Seungho to stop obsessing over him.
Seungho confesses (both unknowingly and knowingly) his feelings to Na-Kyum.
Seungho realizing that this is how Jihwa must have felt for him.
Na-Kyum gets kidnapped.
I think this kidnapping was a catalyst towards Seungho's and Na-Kyum's relationship and not the main reason for the second season itself, even though we all wondered what would come of it. I think the main reason why people felt a bit off by it was because people were expecting this big heroic climax where Seungho comes to Na-Kyum's rescue.
Na-Kyum is a low born, while Seungho is a bi-polar noble with trust issues...he's far from a knight in shining armor. He's used to pleasing himself, first. He's just now learning what it's like to love someone. He's never been heroic nor has he been raised to come to anyone's rescue, so that will never happen until he comes to the full understanding that it's fine to do.

More than half of the things you mentioned would have happened anyways without the kidnapping plot, which was clear from the start would have failed. The only result of this plot is Jiwha giving up with his feelings for Seungho (unrealistic after the fresh and most painful rejection) and a new, cliché side-ship

and Fujoshi got the raws the next chapter a couple of months ago...but I don't know their progress on it.

Hello, it's because someone are using their work
The scanlation group said on tumblr: Also the last chapter of Miwaku Shikake Amai Wana is done I’m just waiting on Amazon to take down our scans that someone is making money off of. The one good thing about waiting is we get the extra in it too. So please wait a bit longer and go attack Amazon until they take it down. I have been but I don’t think just me is helping much.

you wanted to kill him...with your dick?
I'm confused. This is either an extremely horny thing to say...or this man may be the first of his kind to kill someone with his dick.
Other than that, this is the typical smut manga where scumbuckets have a redemption angle because THEY WERE THE VICTIM ALL ALONG!
Hahahaha.....NOPE! You're still a dick.

However I was able to make sense of the Spanish raws via translator, and because of that I have a good grasp of Keith's character.
First off it's up to chapter 37 and I can guarantee you that pic of Keith kissing another dude was a setup. It's classic manga material used for the "make-up" scene. Just note how it's the other guy holding onto Keith and how Keith's face is a bit surprised.
Secondly, it would be a lie to say that Keith wasn't looking for Yeon. He sent out his security team to search neighborhoods as well put out a missing persons report over the news. And given the fight that broke out at the diner, I'm assuming there's a reward for finding Yeon Woo.
Third, even when Yeon was still living with Keith, and even before, Keith refused to let him go. In the next chapter of this English translation, Keith will make out with Yeon Woo (as in pushing him down on the hospital bed and feeling up his chest over and over again). For the chapters to come, you'll see Keith getting more and more possessive to the point where he tosses Yeon's pills away and has sex with him because he doesn't want to smell another person's scent on Yeon.
Thing is, they're happy together. Keith actually tries to spoil Yeon. Heck, it got to the point where they had sex in Keith's office at work.
The issue came when Yeon caught Keith kissing some chick...and Keith never apologized for it.
Yeon decided to leave. He packed his bags, wrote out the check for what he owed for breaking contract, and after Keith refused to take back the gifts and ripped up the check, Yeon tossed the gift into the trash.
I think the core of the issue is that Keith still had a rep for dating tons of women with no strings attached, even though his close friends can see that he's strongly attached and involved with Yeon Woo. He simply didn't reject the advances of others, thus cheapening what Yeon believed to be an exclusive relationship. So now Yeon is trying to get an abortion, but he couldn't go through with it.

i got the chinese raws guys :
https://18.boylove.cc/home/book/index/id/1250

I'm kinda confused just looking at them as there are people who want to continue reading the story to see where it goes or if they are people who genuinely feel sick by Dojin's persistent behavior towards Yuwon?
Do I hold hardcore, edgy feelings for this?
No.
Am I triggered or am I easily triggered by the actions in this story?
Nope.
Do I have an urge to chop off Dojin's dick?
No.
Do I think Dojin's forceful?
Yes, but not in a violent way. He reflects and can listen.
Do I have an urge to slap Yuwon?
Once in a while.
Do I think Yuwon says one thing and means another?
Sometimes. He does say what he means, but that goes away when he doesn't actually act on it.
Do I think Yuwon is bitchy?
Yep.
So I'm just waiting for SooYoung to third-wheel himself into the picture and make these two realize what they feel for each other.

so I finally got the Spanish pages working and I started reading from chapter 11...
now...that second credits page...
is that....?
is that really....???
a modern version of
Yoon Seungho???
Because the art is definitely looking like Byeonduck's and the features of that guy is giving me some serious Seungho vibes and I am dead serious down for this!!!
speaking what's on everyone's mind!
"I WANT IT!" "DO WHATEVER YOU WANT!!!"
LOL. Probably the first time where I completely get where the MC is coming from! Hahahaha!