Contains 3 extra chapters:

Vol. 1: Search fot a Son-in-low
Vol. 3: Koganeiro Butai Gaihen: Koganeiro Ezoushi (黄金色舞台外編　黄金色絵草紙)
Vol. 5: Tenshi no Oshigoto (天使のお仕事); Comic Aun 2001-03