This guy will eventually have shift overlapped with Sayu. That yankee girl will warn Yoshida about it. He's surprised when he saw Sayu working there (she used false name when she lived with him), proceed to blackmail her to show her current place. Sayu reluctantly agrees, and bring him to the apartment. Sayu start to tell her what happened since she left him, and he asked whether Yoshida had sex with her. She answered no, and he got aroused hearing her answer, starting to force himself with Sayu. Yoshida received text from Sayu prior, and arrived just in time, then he drove him outside, making him promise not to interfere with Sayu again. He agrees. Sayu will contemplete what happened now and her answer to Gotou's question. She told Yoshida that she needs some time, but will eventually depart to face her past.
Yankee girl will also told Sayu about her house and her parents (rich girl, as you may suspect from previous chapter), and shared her dream with her.