Yukako Yamagishi's Vision of Cinderella (2), originally Happiness in '30 Minutes'! 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.
Summary
With her Stand Cinderella, Aya Tsuji improves Yukako's features for 30 minutes, meaning that at 4:00 PM, the formula will stop working. Yukako decides to go look for Koichi to try the formula, and as she cuts in line to take a taxi, she meets Koichi just out of the car. To Yukako's astonishment, Koichi as been looking for her to make peace, since they are both Stand users and ought to get along. Yukako, stunned by how effective Aya's work is, tries to ask Koichi for a date, but Koichi cuts her short and directly suggests that they go to a café. In the terrasse, when she thinks about howromantic it would be for them to savour the parfaits they serve here, Koichi happens to orders to of these. Little by little, Koichi feels more attracted to Yukako and events conspire so that both touch their hands. Suddenly it is 4:00, Koichi now doesn't feel well for having eaten his parfait too fast, and has to go. As Yukako desperately cries out at the briefness of Cinderella's influence, Aya is sure that Yukako is coming back to her salon.