Ryou focuses his sadistic attention on Aina Hagiura, using psychological manipulation and physical bondage to break her spirit and force her into submission. Despite her desperate attempts to resist and seek help from Kamijou-san, Aina discovers that Ryou has already compromised the student, leading to Kamijou-san's own humiliating descent. As the web of depravity expands, Ryou sets his sights on the school's principal to further his campaign of control.