Yuka raised her only son, Shuichi, on her own. However, as a result of doting on him too much, Shuichi became selfish and secretly bullied his classmate Hajime. After learning the truth, Yuka apologized on Shuichi's behalf, but... Hajime, burning with a Kokoro for revenge, could not forgive her and played with her body as payment for atonement. However, that did not satisfy her, and she confronted Shuichi, who was unaware of the situation, and asked him, "Can I borrow your mother..."