There are two occurrences in my life that are unforgettable, vividly remember in every nuances as clear as it just happens moments ago.

The funny thing is, there are many things in my memories I buried, even when tried to recalled, it took time to gather it & put it in proper order.
Some of it popped up sometimes out of nowhere. Still incomplete, yet can put it together.

The thing about the unforgettable memories I experience is, ask me anytime, could recounts it without thinking over it, like a reflex that comes out without preambles.

Now, let me tell the first one:

At the age of seven, I have seen a ghost, how do I know it's...