It's very useful in a drama to have the hero (or more often the heroine) intoxicated. It provides the rationale for them to act out of character for comic effect. Or the rationale for them to be unconscious and so not doing what they might otherwise be doing. But above all the rationale for them to get into situations they wouldn't otherwise get into.
There's much more dramatic potential in characters
when they're out of their comfort zone,
when they're out of their normality.
|2005||Sassy Girl Chun-hyang||Episode 1: Mong Ryong|
|Episode 8 end: Choon Hyang|
|2005||My Girl||Episode 7: Ju Yoo Rin at bar then climbs Xmas tree|
|Episode 10: Heroine drunk gets kissed|
|2006||Couple or Trouble||Episode 6, 11: Anna|
|2008||Hong Gil Dong|
|2010||My Girlfriend is a Nine-Tailed Fox|
|2011||The Greatest Love|
|2013||The Master's Sun|
|2015||Warm and Cozy||Episode 7: Heroine intoxicated at end|
|Episode 11: Heroine intoxicated at end again|