‘~해도’ means that the result or state does not change even if a certain condition or action occurs.
When to use
Concession expression, Conditional statement, Emphasizing no change in result
The nuance
Attach ‘-아도’ or ‘-어도’ to the verb stem depending on vowel harmony: use ‘아도’ if the last vowel is ㅏ or ㅗ, otherwise ‘어도’. 하다 becomes ‘해도’. It expresses concession meaning ‘even if ~’ or ‘it’s okay even if ~.’
