Wherein their true enemy shows itself, and Mr Aino visits the subway system. A fan discourses on the subject of her adulation and describes some of the Aino's activities. Then she found the lungs, and it got quiet again. The wounded warrior returns home and describes her exploits for the first time. Parents get to know their daughter.
Friends visit, bringing an important lesson.
An offer is made and accepted, a test is taken. Fates are decided, and the student begins to realize what she has gotten herself into. A visit with old friends. A short note about the contents of chapter 5 and beyond, which you should read if you plan on reading past chapter 4. Wherein things begin to go to hell in a threadbare handbasket.