Any sort of disability works. As long as he's looked down upon by people even the female lead at first. Eventually she gets past that and falls for him. Love triangles a plus especially if the other guy tries to act superior to the male lead because he's not disabled.

Algernon Ni Hanataba O 

✔ It's Okay that's Love 

✔ Werewolf Boy 

✔ Scarlet Heart Ryeo 

✔ Kill Me Heal Me  

Where Stars Land (ML hiding his disability, SML disapproving)

An Oriental Odyssey (ML changes into abnormal being, is hated because of it)

Clean With Passion For Now (ML suffers from severe mysophobia)

Hwarang (ML suffers from epileptic sleep-seizures due to his premature birth)

Sound of the Desert (SML is paralyzed)

In addition:

  • Can you hear My heart - deaf
  • Someone like You - blind7
  • Hello God - mentally challenge man with 65 IQ
  • the Equator Man - blind
  • Introverted Boss