can you guys please analysis the following sentence?Do you want t_英语解答

can you guys please analysis the following sentence?
Do you want to come back for an after party of two?
"after " is adj?

人气：382 ℃　时间：2020-06-30 20:34:18

解答

Yes,it surely is.
Here are some other examples:
in after years,
an after cabin.