The blind girl is bullied, but the male protagonist silently protects her. She relied on this warmth, but she didn't know that he was responsible for the injustice of his father's generation. When cornea transplantation allowed her to regain her sight, she discovered that her eyes were bought by him at the cost of his life - his enemy was punished, and there was no trace of him except for a button that hid his sadomasochistic love.
