Ren Sohma is the mother of Akito Sohma and yandere for Akira Sohma.
Background
Ren was a maid who served for Akira.
Yandere Traits
Ren is very obsessive of her husband's affections. She was hoping to give birth to a son so that her daughter wouldn't steal away Akira's love for her. When she found out that her unborn child was a girl, she threatened to abort the baby unless she was raised as a boy. When Akira passed away, she became abusive towards her daughter, believing that she had succeeded in taking Akira's love.