Consider, maybe Saeyoung doesn't actually have ADHD at all (This possibility is referenced multiple times). Of course I'm not really saying he doesn't, but a lot, if not all, of his symptoms do share traits of (c)ptsd. It's actually said that (c)ptsd has been often misdiagnosed as adhd. There is always a chance that he has (c)ptsd co-morbid with adhd, too. There have been studies that suggest that perhaps (c)ptsd can develop adhd and even vice versa.
/ᵎ\ ᴬˡˢᵒ, ᴵ'ᵐ ᵍᵒᶦⁿᵍ ᵗᵒ ˢᵃʸ ᵉᵃʳˡʸ ᵒⁿ ᵗʰᵃᵗ ᴵ ᵃᵐ ⁿᵒᵗ ᵃ ᵗʳᵃᶦⁿᵉᵈ ᵖʳᵒᶠᵉˢˢᶦᵒⁿᵃˡ ᵇʸ ᵃⁿʸ ᵐᵉᵃⁿˢ, ᴵ ᵃᵐ ⁿᵒᵗ ˡᵉᵍᵃˡˡʸ ᵠᵘᵃˡᶦᶠᶦᵉᵈ ᵗᵒ "ᵈᶦᵃᵍⁿᵒˢᵉ" ᵃⁿʸ ᵖᵉʳˢᵒⁿ ᵒʳ ᶜʰᵃʳᵃᶜᵗᵉʳˢ. ᴱᵛᵉⁿ ᶦᶠ ᴵ ʷᵃˢ, ᵗʰᵃᵗ ʷᵒᵘˡᵈ ˢᵗᶦˡˡ ᵇᵉ ᵗʰᵉ ᶜᵃˢᵉ, ᵃˢ ᵗʰᵉ ᵖʳᵒᶜᵉˢˢ ᵒᶠ ᵈᶦᵃᵍⁿᵒˢᵉˢ ᶦˢ ᵃ ᶜᵒᵐᵖˡᶦᶜᵃᵗᵉᵈ ᵖʳᵒᶜᵉᵉᵈᵘʳᵉ ᵗʰᵃᵗ ʳᵉᵠᵘᶦʳᵉˢ ᵈᵉᵈᶦᶜᵃᵗᵉᵈ ᵗᶦᵐᵉ ʷᶦᵗʰ ᵃ ᵗʳᵃᶦⁿᵉᵈ ᵖʳᵒᶠᵉˢˢᶦᵒⁿᵃˡ ᵗᵒ ᵖʳᵒᵖᵉʳˡʸ ᵈᶦᵃᵍⁿᵒˢᵉ ᵃⁿʸ ᵖᵉʳˢᵒⁿ. ᵀʰᶦˢ ᶦˢ ʲᵘˢᵗ ᵃ ᶠᵒʳ ᶠᵘⁿ ᶜʰᵃʳᵃᶜᵗᵉʳ ᵃⁿᵃˡʸˢᶦˢ ᵖᵒˢᵗ ᵇᵃˢᵉᵈ ᵒⁿ ᵐʸ ᵉⁿᵗʰᵘˢᶦᵃˢᵐ ᶠᵒʳ ᵐᵉⁿᵗᵃˡ ʰᵉᵃˡᵗʰ ˢᵘᵇʲᵉᶜᵗˢ :⁾ ᶠᵉᵉˡ ᶠʳᵉᵉ ᵗᵒ ᶜᵒⁿᵈᵘᶜᵗ ʸᵒᵘʳ ᵒʷⁿ ʳᵉˢᵉᵃʳᶜʰ ᵒⁿ ᵗʰᵉˢᵉ ˢᵘᵇʲᵉᶜᵗˢ ᶦᶠ ᵗʰᵉʸ ᶦⁿᵗᵉʳᵉˢᵗ ʸᵒᵘᵎ /ᵎ\
☆ Yoosung's Hidden ADHD?? ☆
Now, Yoosung on the other hand... There are many signs he might have adhd too, to be honest. Many things are pretty subtly hinted throughout the routes, but one of the biggest pieces of evidence I've seen more blatant is that spaceship thought Jumin has about "Mr. Choi needing Mr. Kim's fidget cube". Now there is no proof that Mr. Choi is Saeyoung, or that Mr. Kim is Yoosung, in fact, I initially thought it could be his driver, but I honestly can imagine Jumin always preferring to call them more professionally by their surnames.
Yoosung is actually super bright, he's really very intelligent, but he always sees himself as stupid because he can't seem to catch up with everyone else in the organization. Almost like the God forbidden "you have so much potential, if only you could just do better". It's pretty clear that he excells in his interests and things that challenge his mind. Even the game suggests lolol is a strategy game that even Mensa certified Jumin could get into. By the end of his route, his passion to become reliable for his love pushes him to excell in his Veterenary studies.
At first sniff, Yoosung's room appears pretty clean and tidy, but there have been moments where his room is actually cluttered in his plentiful plush animals. lol Not to mention there is a whole story line where when his mom comes to visit, she makes him clean up his house.
He's pretty easily distracted too, when he intended to go to class, he convinces himself to stay home and play lolol. He is always tempted to chat up you or a friend when he's in class or supposed to be in class, or studying. Depression and anxiety can also exacerbate symptoms of neurodevelopmental disorders like adhd.
Distractibility in adhd isn't always bad thing, however. Some theorize that individuals with adhd were always inevitable, as their "distractibility" can also make them very keen observers, often with a great eye for detail, but may miss the big picture. As I've stated in a previous post, Yoosung is actually pretty perceptive and intuitive. He is quick to pick up on small details others might miss. In history people who might have had adhd-like qualities would have been beneficial with hunter and gatherers.
Before Rika's influence on him, he was rather lethargic about charity work and would always insist on deferring doing anything related when he could, almost as if a ball and chain were preventing him from doing it. It wasn't until after Rika showed him the benefits to himself, that he began to be passionate about it like Rika was/is. This isn't because Yoosung was a bad person or anything like that, but because a lack of interest in something can quite literally disable the adhd person from willing themselves to do the task until it triggers their urgency, to which in some cases the person with adhd can perform miracles, but in most cases cannot. Yoosung has also had many different interests in his past as he has stated and what you can witness within the game. Those with which he has subsequently abandoned once he decides he wants to do something else.
It is also well documented that people with adhd have difficulty controlling their emotions and that those emotions are often way more amplified than a situation might call for. Rsd (rejection sensitive dysphoria), which is not currently diagnosable in the DSM (Diagnostic Statistical Manual of Mental Disorders), is also a common co-morbidity with adhd. RSD can cause catastrophic reactions to feelings of rejection, abandonment, or even loneliness.
I don't exactly know why I brought up RSD, but perhaps it's just to put a point on the fact that those with adhd may be impulsive and not always able to control their potentially intense emotions when they may occur. (E.g. bad endings, especially the "yandere" one.) Also, things related or inherent to RSD, may potentially create obsessiveness over things that they love and are passionate about.
Now as for the counter argument that he was very studious before he started university, sure, but for one thing, not all people with adhd perform poorly in school. There are many who still excell and do well. Not to mention, Yoosung even mentions he wasn't particularly passionate about anything while in school, he just did what he felt he needed to do, and that's better than feeling you have nothing else you want to do. One thing a person with adhd cannot stand is boredom or stagnation. The brains of people with adhd are already generally understimulated compared to the average brain, that's why they constantly feel like they need to have their mind and senses occupied with something that offers sufficient stimulation. Video games are often a popular obsession of those with adhd because many of their senses are constantly being stimulated while playing, and even better if it's something they enjoy.
Oh man, this wasn't meant to be the Yoosung might have adhd analysis post, but I went on a tangent, guess I'll keep it.
Of course, Saeyoung also has many of these symptoms, but I believe I should make the comparison (c)ptsd has with adhd a discussion for another day/post. Actually, them having so many of these things in common are probably one of the reasons why they seem to get along so well, as they would be able to understand eachother's feelings.
ᴵᶠ ᴵ ᵗʰᶦⁿᵏ ᵒᶠ ᵐᵒʳᵉ, ᴵ'ˡˡ ᵐᵒʳᵉ ᵗʰᵃⁿ ˡᶦᵏᵉˡʸ ʲᵘˢᵗ ᵃᵈᵈ ᵒⁿᵗᵒ ᵗʰᶦˢ ᵖᵒˢᵗ, ᵐᵒˢᵗ ᵖʳᵒᵇᵃᵇˡʸ ᵃᵈᵈ ᶦᵐᵃᵍᵉˢ ᵗᵒᵒ, ᵇᵘᵗ ᴵ'ˡˡ ᵖᵒˢᵗ ᵘᵖᵈᵃᵗᵉ ⁿᵒᵗᶦᶜᵉˢ ᵒⁿ ᵐʸ ᵇˡᵒᵍ ʰᵉʳᵉ ᶦᶠ ᵃⁿʸᵒⁿᵉ ᶦˢ ᶦⁿᵗᵉʳᵉˢᵗᵉᵈ ᶦⁿ ᵗʰᵃᵗ. ᴼʳ ʲᵘˢᵗ ˢᵘᵇˢᶜʳᶦᵇᵉ ᵗᵒ ᵗʰᶦˢ ᵖᵒˢᵗ, ᴵ ᵍᵘᵉˢˢ. ᴵᶠ ᵃⁿʸᵒⁿᵉ ᵉˡˢᵉ ʷᵃⁿᵗˢ ᵗᵒ ᶜᵒⁿᵗʳᶦᵇᵘᵗᵉ ᵃⁿʸ ᵉˣᵃᵐᵖˡᵉˢ ᴵ ᵐᶦᵍʰᵗ ʰᵃᵛᵉ ᵐᶦˢˢᵉᵈ, ᴵ ᶜᵃⁿ ᵃᵈᵈ ᵗʰᵉᵐ ᵒⁿ ʷᶦᵗʰ ᶜʳᵉᵈᶦᵗ.
*Removing the social point until further notice
