
I don't know the reason but I think it's genius of the author to create a photographer character with this disease . Even more sweet is how the author made the romantic connection from Taku to Haesoo linked to that... imagine being someone who sees everyone as the same because they can't distinguish their faces and suddenly spot someone who looks unique to you. This author's idea was so beautiful.

From what I've found on Google it's usually more common from head trama or people who've had strokes and people with autism sometimes have a forms of face blindness. The part of your brain that can recognize faces is injured in some way. From the way the author presented taku's uncle's story but didnt tell us the story its safe to say something happened with the uncle an accident or something that caused taku's face blindness

I was thinking the same thing about the uncle.

I read it somewhere.....hmm I think several times

Well as the others said its not really trauma i guess it's just a condition.
I have it too so i kinda understand him, jeez it's so awkward. Maybe it's just my anxietys but i feel like they think im rude or something because i cant recognize them. It's not like.....everyone looks the same (he may have a more sever case of faceblindness) its just... i can't really distinguis them apart. It's really inconvinient.
I feel you Taku
What do you all think caused it?
Is it congenital/present since birth? Or is it related to his uncle's sad story?