3. She Was Pretty- I think, he said he doesn't drink but didn't elaborate why. But he had a drink and passed out. (I'm not sure if it was that show but it was a Park Seo Joon drama)

I could be remembering the wrong drama, but I think its this first one below.

4. How to Meet a Perfect Neighbor - SML (I think) doesn't drink because of drinking problems in the past. If second leads are counted.....

5. Somewhere Only We Know (2019) - ML was an alcoholic in the past and doesn't drink, I think. Unless he does, and was just hiding it....I can't exactly remember.

6. Kiss Sixth Sense- ML implied it i think because it would be a sensory overload with his special abilities and he drank to compete with love rival for ego purposes

7.Guardian- The professor(Shen Wei) but he passed out after taking a sip lol

not sure if these count because the had alcohol at one poin but it was established that isnt the norm

it has been 24hrs

10 office movies/dramas where the leads don't hide that they are dating

1. Forever and ever 

2. Love 020

5. Girl Next Room: Richy Rich

6. Strong Woman Bong Soon

7.  Go Go Squid! (if it counted as office lmao) 

3. my day 

4. hospital playlist (office no, workplace yes)

sending them again because i totally missed 'office' ?

8. Boss & Me

9. Ossan's Love

10.  Protect The Boss (after a while)

10 in which a main character is a twin, but not an identical twin. In case of remakes, only one will count.

5. Our blues

6. Link: Eat, Love,Kill (but they didn't showed the adult one yet)