Saiko Akamine

Saiko Akamine is the nurse at the Kouryoukan Academy and the current guardian of Takahisa Tajima. In Sin, Damnation and the Atonement Girl arc, she acts as a sub character, but becomes the main drive during her final appearance in the plot. At school, Saiko wears a black camisole and stockings, and a red skirt and high-heels, and wears a white lab coat. Days off, she wears the same outfit, except she wears a jacket or without it. Saiko is described as a lewd school nurse who spies around the campus for virgins. When alone, she even uses sex to satisfy both herself and Takahisa Tajima. This trait of her is probably due to her time as a street biker from a few years before the events of Sin, Damnation and the Atonement Girl arc. After taking Takahisa in however, she abandoned her old lifestyle and started working to raise him. The fact that she became a nurse in Kouryoukan Academy is probably to keep observation on Takahisa at all time, even though she isn't good for it. She also realized that Takahisa had taken a liking to Yukiko and created many opportunities to make them come together. Despite having a somewhat bitter relationship with Yukiko's aunt, Mutsuko in the past, she still welcomes Yukiko like family.