Hi, which team do you work for? Currently, the option to remove Rafael is only available if you work for Team A or Team B. If that's the case, you need to buy digital trace from Jiu for $4,000. Before you can do that, you need to help Jiu to investigate Rafael's desk. You can only find secret at Rafael's desk if you have at least 400 Investigation SP. This is not a problem if you play a male character but if you play female character, you need to improve investigation skill by interacting with cabinet at meeting room everyday. To get Jiu to ask you about Rafael, you need to investigate Bob's desk. Jiu will interrupt you.