Spoiler Alert! We have hidden this information so that you have the choice to try it on your own, or have the advantage of knowing how the sausage is made...
We are simply not sure at this point whether this updates inside New Pantheon or outside in Celestial Spire. We do NOT think this is a Group quest, as it looks like it can be done in the entrance room without fighting.
Daily Quests are repeatable up to a total (for all Daily Quests) of 10 times per day. The count can be reset to zero by purchasing and using a Daily Quest Ticket from the Item Shop (for 39 ($1.16)† ) or from any Phirius Merchant (for 780 ).