"Now, I'm sitting on a bench in the park. This park is special to me because it's where my girlfriend said 'yes' when I proposed five years ago. Today is our five-year anniversary. I'm watching her from afar. I can see happiness in her eyes, but I'm not the reason for it because she doesn't remember me anymore.

She lost her memory due to an accident that happened five years ago, on our third anniversary. We used to celebrate our anniversary here in this park every year. However, on our third anniversary, she had an unexpected car accident on her way to the park. That's why she doesn't remember anything.

I'm angry with myself because if I had just picked her up that day, she wouldn't have lost her memory."