Which K-pop group had an amazing run of four comebacks?

[u/why_dmn]

[u/SkyloTC]

ONF's 2021 is literally legendary to me. 1 comeback each quarter, all 4 all-time greats. Good lord.

[u/SkyloTC → u/SkyloTC]

and to add Sukhumvit Swimming right before it in 2020, then they jumped directly into enlisting all at the same time the year after lmfao