I found out that the whole NN settings UI is just an HTML file, and that there's hidden dummy profile info.
Translation:
PC confirmation menu
NNID input (takeover)
Re-enter NNID
Mii selection
MSET return
COPPA compliance
COPPA code input
Modify settings
Translation:
PC confirmation menu
NNID input (takeover)
Re-enter NNID
Mii selection
MSET return
COPPA compliance
COPPA code input
Modify settings
