The boy was 17 years old.
It was a special day in the orphanage he lived. Yes, he as an orphan, obviously had to live in an orphanage.
Since he opened his eyes, he remembered his mother to be sick. She always had a weak body and had to spend most of her time in bed or be in the hospital.
That was why the boy didn't get to play with her, spend time with her, create deep bonds with her, and have mother and son experiences with her as his friends had.
But that didn't matter. He still loved his mother more than anyone. Even if she was sick, she was always a warm and caring mother. She always spent her time with his son when she was feeling fine enough and showered him with her love and affection.
They were having a hard time but that was fine. He was still happy. He really loved his mom. She was like a sun to him.