Matsubayashi Rumi

The health committee member that has a calm and quiet impression.
Since she often went to the infirmary after sustaining a minor injury, she became involved with the main character and became close to him.
During the many treatments he received, the main character continued to shower her with lewd energy, although it wasn't the correct method, which increased the sensitivity of her entire body and made her more susceptible to estrus.
She started acting after Miyuri's incident. Her presence is inconvenient for the main character, who frequently uses her infirmary, so she is manipulated and made into his collaborator.

Translated from https://www.getchu.com/soft.phtml?id=1273918