In Chapter 127, Ruri chan asks her friend how she can get her boobs to grow as small as hers. She asks Ruri to tell her what she does to her breasts to make them grow. Ruri says that she tries to make her breasts bigger, but she can't figure out a way to do it without hurting Ruri's health. She tells Ruri that she should live a well-regulated life, get eight hours of sleep, and stretch to help her lymphatic system.