What if it is just one person alone saying this? Is this always third person no matter what?
One person would have to be saying it to another person, making it 2 people minimum. If I'm talking to you, we'd be "us" or "we."
The sentence, as I understand it, is literally, "us we will see " or, more likely, "we will see eachother." Loosely translated to "see ya!"
The answer given may mean "we will see us". However, the English sentence to translate, "see you", could also easily mean, "I will see you".
How should we say that in Spanish? My guess was marked as incorrect.