Harumi is first seen in vol. 2 as one of Karin's victims. Later on she seems to be working on a love hotel, making money by having guys spending the night with her. Harumi has run away from home due to her hatred towars her parents. Fumio Usui (who works at the love hotel as a cleaning lady) is trying to convince Harumi that what she's doing is wrong, and that she should start living at her own house again. At first, she rejects but later on she gives it a try and makes up with her parents.