I'm a Particle !?!?!

A man named Okumura Hito dies in a fatal truck accident by saving a boy when walking to home after work As he was dying, he saw particles around him. but, it seems that no one saw these particles. His last words were "Hmm, what are these particles, it seems like I am hallucinating" He closes his eyes thinking he will never see the world again.

But, he's surprised as he does not feel any pain across his body. it also appears that he is not touching anything. He wonders what is happening and opens his eyes and to his wonder he was in a humongous jungle, at least to him it was that way

"Where am I" He wondered. "Aren't I supposed to be in heaven or hell"

He saw a lake and went to it but it seemed to him that he was floating" I'm definitely not a human" He thought. He saw his reflection and screamed

"I'm a Particle?!?!"