In March, 1862, he moved to the new-built second enclosure of the Kagoshima Castle from the Shigetomi residence (after that, he was also called 'Fukujoko' [literally, ' the Prince of the second castle'][副城公] in the domain).
文久2年（1862年）2月、重富邸から新築の鹿児島城二の丸邸へ移る（以後久光は藩内において「副城公」とも称された）。