Sakurazawa Tomomi

She is the very beautiful and successful student council president, but she has a secret, she was cursed with having lactating breasts despite her age and only her classmate Hikaru Kai knows the secret which will help her overcome. She has a special physical condition that allows her to produce breast milk, but she can only do so through sexual relations. One day, the protagonist finds out her secret and uses an app to record the amount of breast milk she produces, in addition to taking sexual photos of her and performing other perverted activities while pampering the breastfeeding girl.