The 2012 PSP version of Conception wasn’t released outside of Japan, so if Conception Plus makes its way to the west it will all be new to players, Arfie included.
When Conception Plus: Ore no Kodomo wo Undekure! hits PS4 in Japan this winter, it’ll bring some updates to the PSP original along for the ride.
The character in question is Arfie, an instructor who trains the Star Children in day care.