I mean, if you ignore the fact that the script makes no sense whatsoever you will be fine and you will even enjoy it.
The amount of holes and nonsense in the script is endless, the amnesia thing is not actually consistent and the guy walk around recognizing everything and living life completely normally with the only help of a few sentences he writes on a journal is just not believable! But once you decide to watch it without analyzing it or overthinking it it's entertaining enough!