Responses
These fit the not being able to differentiate faces part but I don't know about the box thing? https://www.mangago.me/read-manga/harenai_sekai_de_kimi_dake_mieru/
https://www.mangago.me/read-manga/the_blurry_viewfinder/
The manhwa is about one of the mc has this disability where they literally cannot differentiate faces and this one other character wears a box on their head. I remember liking this story but forgot the name