Write a short story based on the following hints in about 150-200 words:

1. A boy lived with his mother.
2. His mother had only one eye.
3. Once upon a time, the boy hated his mother and always felt embarrassed by her appearance.
4. He wished his mother would disappear.
5. A few years later, the boy left home, came to the city, and got settled.
6. He forgot about his one-eyed mother.
7. One day, he received an invitation for a school alumni reunion.
8. After the reunion, he visited his old house.
9. He saw his mother lying on the cold ground with a letter.
10. The letter revealed that during his childhood, he had met with an accident and lost his eye.
11. His mother had donated her eye to him.
12. The boy cried, realizing his mother's sacrifice.