How do we lift the lockdown of Caliber city, I don't see anymore exclamation marks for quests
What kind of lockdown is that? I believe I have not seen any Caliber city lockdowns.
If no character has exclamation marks, wait for next game day, some may appear.
If you have finished all content, the game has shown the info text telling you so.
You can see in the morning in the hotel exterior view girl icons in lower right. There is content for the girls that are shown there.
The lockdown will remain at least until v0.20, possibly beyond.
The current explore content is something that is by design played during the dead time of the earlier part of the game. So it is considered early game content and acts as a way to introduce the player to the world.
But with Lin's event in v0.19, the world will change drastically. So the plan is to create a new set of Explore content to introduce the player to the new world. But this won't happen until the current Explore content is finished, which it mostly is by now. Maybe 80%