Yukako Yamagishi Dreams of Cinderella, Part 2(山岸由花子はシンデレラに憧れる その②Yamagishi Yukako wa Shinderera ni Akogareru Sono 2), originally '30 Minutes' of Happiness!(「30分」の幸せ！'San-Jū Fun' no Shiawase!) in the WSJ release, is the three hundred forty-ninth chapter of the JoJo's Bizarre Adventure manga. It is also the eighty-fourth chapter of Diamond Is Unbreakable.