Aiko Katsuragi

The matriarch of the Katsuragi family and the only doctor in Rinin. Aiko comes from a long line of doctors and married her husband Toshio at rather young age. She had her first daughter, Shiori, while she was still a medical student, before having two more children. Overtime, she and Toshio have grown apart, and as a result, hadn't had sex with him in over 5 years, leaving her sexually frustrated. In the visual novel, she has a sisterly bond with her nurse, Natsuko Hayasaka. She is aware of the Rinkan Club and tries to prevent her family from getting involved with the cult, which ultimately pr...