I honestly didn't get it at all.
I just kept watching and kept watching,
And at the end of the last episode, I just said
"So...what? What happened? Why?"
I had so many questions left over, why did this happen, why did he lose his memory, why did this girl he met of the street (kind of) fall in love with him
Just didn't get it at all. Maybe the story was too complex for me. Dunno.