To answer the "color blindness" question, he wasn't color blind. What happens was that he was the least interested in something so insignificant as choosing a book's color. Is like when your in your days and your friends are talking about something, but your concentrated on the pain and you want to rest.
To answer the "earring" question, he is wearing it in the last chapter. Looks closely at the part where he is smiling and his hair moves forward. It looks beautiful!!
The story of the doctors was more like a forbidden love than anything else. He -long haired dude- was the brother of the doc. patient/friend. It seems they grew apart after her death and once again became aquantance after meeting the ML. They both like each other but their afraid that their social group will talk. So after the drama between the ML and the his mother, the doc decides to chase after his beloved.
And about the kiddos... it is explained that it was love at first sight- more like voice at first hearing. The pale ML first saw him, the other ML heard him when he answered the phone. Ever since, he anticipated the call of the boy. But the boy had a tragic accident where he forgets everything and lives his life never remembering about his call-friend.
p.s; sorry for the long paragraph, i know no one will read this but i just wanted to convey my opinions and thoughts about this.
oh my god. I'm at a loss for words. this story is absolutely amazing and I'm so glad i read it till the end. i love how the author describes the various phases of recovery, of finding happiness and love despite being so hopeless and broken. i love how the author portrayed jeff's character and how he never gave up on mending their relationship and earning Terry's trust and how he was so determined to save terry despite how big of a burden it was. he didn't care about his own health declining or if he was breaking while trying to save someone so utterly helpless and far gone, he didn't quit and stayed willingly no matter how many times he was pushed away and i think that's absolutely amazing, because such mentality and personality can not be found in most people existing. (ofc people don't owe that to eachother but doing that willingly for someone is amazing.)
also, i would like to mention some things i noticed in the plot that were put aside or ignored later on, such as Terry's colour blindness. there was a scene where his female friend (i forgot her name) asks him which book(?) (was it a book?) he likes better and he said something in the lines of “i can't tell/see the difference” or such. but that was all we knew about it, because it was completely ignored later on. another thing, i would like to know what happened with that earring? he said he would wear it later on but we never got anything more to that. i know it's insignificant but am i the only one curious? also, we never got the full idea of the relationship between the two doctors or their past nor was Terry's childhood incident with jeff fully explained. is it only me who wants to know these things?
oh and that fish- amazing. have you ever seen an alive, flying fish on land?
anyways i do have some complaints about some events that occured and how the author conveyed some but all of them were overshadowed by the rest of the plot. i love the panels that were written in third person, the words were beautiful. i cried and smiled alot, so this will be one manga to remember. thank you to the author for writing and thank you to the translator for translating and uploading it!