This happened 6 years ago...
Just write casually and treat it as practice. In order to commemorate the memories that I don't want to forget... Well, I can remember it for such a long time, I guess I can't forget it even if I want to.
Even if you find a place to put it down, it will feel more meaningful when you look back on it occasionally...
Alas, growing up is such a cruel and exciting thing!