>are you saying this other caption-site shut down?
No - kuz closed Heyuri's original /l/ board when Heyuri was revived in 2020, and then he & kaguya stole it launched a separate kolyma-branded loli imageboard in 2021 known at one point as loliboard (it had over 9000 different names and domains in its lifetime). kaguya was the admin

Eventually that site was discontinued and the content of the main loli board was imported over to Heyuri in the form of a secret board, where kaguya alone would continue posting in it daily. Last month, it was finally made public as /l/, and contained all the old posts from the discontinued loli site - some of which doesn't necessarily fit with Heyuri's rules and culture, but is left up for posterity anyway