[KN] Among the debut songs of 2nd generation girl groups, which song has had the most influence?

Into The New World is just too iconic, it can make you cry if you're in that mood, telling from personal experience

if you are talking with influence, 2ne1 for sure.

edit: i made a mistake

didn't 2ne1 bring about a lot of girl crush groups?

ITNW. It was beyond amazing seeing a rookie group do performances that not even veteran ggs can manage to emulate/cover. It’s impact is also by far the biggest idol song; the song was used for many types of social issues in Korea such as womens unis to pride marches to bringing down their corrupt gov.

Into the new world is iconic now but it did receive a lot of hate back then. Bad girl good girl was a massive hit.

Quote from laysbarbeque

Into the new world is iconic now but it did receive a lot of hate back then. Bad girl good girl was a massive hit.

The song didn't get hate at all but SNSD did from bg fans.

I think that Fire and Bad Girl Good Girl were bigger when they were released but now ITNW is considered as a classic and many rookie girl groups cover it.

Fire i guess? i knew snsd from gee's popularity

ITNW is more iconic now but back then it wasnt received well. Fire was game changing.