You need to take photoes for Emily with all different cosplay costumes(another 3 times after the first time with her original clothing)then the fourth time you will see a bastard wants to violate Emily. Fght with him and loose, you can go to the gym and unlock fighting class.
After the first time taking photoes for Emily, in the evening, talk to your roomate and she will ask you for taking pictures for her (but don't let her use the camera to take photoes for you). Then she will invite you to her office.