Quite a bit of manhwa has one of the mcs be a smoker so I’m sure u can find smth just by clicking randomly lol. The first two examine it much more thoroughly and focus on it quite a lot, they’re also by the same author if that helps. For the second ig it’s more backstory but it does intersect with the plot a bit.
Alcoholism:
https://www.mangago.zone/read-manga/private_scandal/
Drugs iirc:
https://www.mangago.zone/read-manga/obedient_heritage/
Alcoholism and smoking:
https://www.mangago.zone/read-manga/sangyang_the_wanderer/
Smoking specifically in the side stories
https://www.mangago.zone/read-manga/bj_alex/
Smoking
https://www.mangago.zone/read-manga/pink_heart_jam/
Alcoholism if u rly wanna read jinx tho ig
https://www.mangago.zone/read-manga/jinx/
Title says it all
https://www.mangago.zone/read-manga/liquor_cigarette/
I haven’t read this in a while but I swear there was smth about smoking/drugs? Someone correct me if I’m wrong
https://www.mangago.zone/read-manga/cloud_1/
Thank you sm omg
Darkness Before The Dawn
The main characters arent addicted but rather one of them makes and supplies drugs in hong kong slums. One of my fav stories and its pretty unknown. Lmk if u enjoy (๑•ㅂ•)و✧
I’m not talking about substance abuse as a backstory, but rather in the story and plot itself. I’m trying to make a list about how yaoi authors chose to portray addiction, and what I like abt how they do it.