On the western perimeter of the apartments in the south-west of the castle area can be found Homei-ji (法明寺) Temple which has a tombstone of Shigetsugu (栄続) TSUCHIMOCHI (his homyo (a name given to a person who enters the Buddhist priesthood) was 'Hazuki Gyokuko Daizenmon,' from "Kagoshima Tsuchimochi Keizu" (Kagoshima Tsuchimochi Family Tree)) who was dispatched to give New Year Greetings to Yoshihisa SHIMAZU on February 18, 1578 after the takeover of the Shimazu alliance from the Otomo alliance.
城域南西部の団地西端には、天正6年（1578年）1月2日、大友同盟から島津同盟への転換となった島津義久への新年挨拶に遣わされた土持栄続（法名「葉月玉公大禅門」／『鹿児島土持系図』)の墓碑の現存する法明寺がある。