
Taehan didn't mark Doyun yet, I think. And as for how, mostly they bite their partner on the neck, that's how it is in Japanese Omegaverse I've read so far. But I'm not really sure how in some manhwas, because in Love is an Illusion I don't really know how Dojin imprinted on Hyesung. Maybe the author will explain it later tho :)

Yeah but I'm also wondering how the heck they were able to maintain such.lifestyle with their current job. doyun is understandable cause it seems he is from a very well off family but Teahan is almost the same status as Doyun. The close to reality in life style base on their job there is the Omega, he basically lives in a very small apartment but our MC and ML lives in a wide space apartment. Well this is just a random thoughts .

In Live is an Illusion, i think at some point, it was stated that the imprint thingy is like a myth/legend/rare thingy because not every couple could and they will only know it happen when it’s done (something like when Hyesung and Dojin were very down or worn out when Hyesung left him after he gave birth to Byul)
It has been a while since I last read it so the term I used is probably is wrong.
I was seriously dreading this chapter FOR ONE WHOLE MONTH! I'm so thankful Taehan came on time to save his beloved(/TДT)/ Go kick that alpha in the head to wake him up!! And maybe you should start thinking about marking Doyun soon y'know ლ(´ڡ`ლ)