There is a good post below regarding 5th generation girl group first-week sales, but there is something to be cautious about

Among the girl groups listed,
"Which girl group engaged in bulk pre-ordering (album pulling)
and which girl group did not"
In addition to this,
"If a girl group engaged in bulk pre-ordering, to what extent did they do so"
I strongly urge you to examine these factors.
This is because bulk pre-ordering itself does not represent sales in the conventional sense,
and while they might manage to exhaust the stock through endless fan signing events,
if they fail to sell through the entire inventory, that stock turns directly into a deficit for the agency.
Since there are more agencies and girl groups than you might think that aim to manipulate public opinion by leading with numbers while subtly hiding these behind-the-scenes details,
it is extremely important to verify the reality of bulk pre-ordering before looking at the revealed figures.