Groups that did get left behind due to competition?

I would say Secret. They were pretty popular but noticeably less than like Sistar, Girl's Day, SNSD, 2NE1, KARA, T-ara, or f(x). Then in 2012 when lots of girl groups started debuting and getting more popular, the general public moved on from Secret.

I would say Gfriend too. After Time For The Moon Night they had a hard time pumping out hits like they used to and keeping up with all the competition of the newly popular 4th gen girl groups

Ateez. They use to be talked as the next top group but now they’re far behind the main bg of 4th gen

Everglow i worry is on its last legs

Itzy and Loona are at a crossroads right now. Both in danger of being jumped by the new crop of 4th Gen GGs.

Itzy’s name when they’re the 3rd most streamed Korean GG, can y’all be serious for one minute.

Everglow in 2019 they were the most hyped rookie after Itzy, the international stats were good, their sales were not that bad in the 2019 climax, dun dun was really popular internationally but since La di da they haven’t recovered and now their sales are way too stagnant.

Quote from atropos

I have actually never heard of this group......

They released many bops

My favorites songs by them

Secret Number. They were no top group but they had a lot of hype in 2020 and all of that just seemed to vanish in thin air after their first comeback. Their sales have always been bad, even their view/streams aren't what they used to be.

Quote from atropos

I have actually never heard of this group......

I felt fingertips kind of contributed to their decline

Idk, Fingertip wasn't the biggest hit ever but it did alright and their next comeback Love Whisper was a hit. Then Time For The Moon Night was a huge hit.

Quote from vzal

Secret Number. They were no top group but they had a lot of hype in 2020 and all of that just seemed to vanish in thin air after their first comeback. Their sales have always been bad, even their view/streams aren't what they used to be.

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Things are changing after their OST tho, 1M Spotify Monthly Listeners. Hope this new comeback is a hit.

That's actually a really good example answering OP's question

Gfriend

Everglow

Pentagon

Also Monsta x and Got7 even tho they’re still doing well, they’re not top groups

Quote from killthisfenty

Itzy’s name when they’re the 3rd most streamed Korean GG, can y’all be serious for one minute.

Everglow in 2019 they were the most hyped rookie after Itzy, the international stats were good, their sales were not that bad in the 2019 climax, dun dun was really popular internationally but since La di da they haven’t recovered and now their sales are way too stagnant.

I think LA DI DA actually did pretty decent. DUN DUN was just anomaly. Even after 1½ year LADIDA is still top 3 the most popular Everglow song. First and Pirate are the ones that drastically declined Everglow Spotify streams.

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What happen to ur profile pic?

I removed it.

Quote from kirishiki

I think LA DI DA actually did pretty decent. DUN DUN was just anomaly. Even after 1½ year LADIDA is still top 3 the most popular Everglow song. First and Pirate are the ones that drastically declined Everglow Spotify streams.

Tbh I always thought first was the song which doomed EG, but there was a thread saying it was actually la di da and even some people said they weren’t that fan of la di da which is shocking since it’s a fantastic song

It's crazy but before feel my rythem a thread like this would have been filled with RV as the answer

II guess we can't really predict the full trajectory of a group.

KNK

Quote from atropos

Never heard of them....

Exactly

The debuted around the same time Astro did, they had some hype bc some members were bighit trainees

Golden Child got mid tier popularity in 2019-2020 due to Wannabe, but after Burn it it's kinda slowed down even though they're doing better album sales. They're still mid-tier, but other groups have debuted and stuff.

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lovelyz

You read my mind!

Quote from atropos

Well if the only selling point was the group having bighit traniees that's not much.....

Obviously it was not only that

going to aim for big 3 jyp. if we are talkng about young group that never took off in korea and left behind, then itzy although they are still doing good in spotify. Their first full album flopped really hard in sk. And nmixx too. they came and went even though their sales are good. GG competition for 4th gen is very tough. There are just too many groups debuting. koreans said 3rd gen felt oversaturated too many groups but now it feels proper oversaturated to me with hybe being added and big 3 changing to big 4

GOT7, Monsta X.

I remember their fandoms used to overlap a lot with the BTS fandom back in 2015-17. But I wonder now why I don't see much ARMYs in the Ahgase & Monbebe fandoms and vice versa.

Quote from atropos

Weeekly took a odd turn with concept change. 💀

Why the hell did they change their concept everybody was loving the school and friends vibe!!!!!