Often associated with kama, retro art has us hooked (5)
I believe the answer is:
sutra
'often associated with kama retro' is the definition.
I can't tell whether this definition defines the answer.
'art has us hooked' is the wordplay.
I cannot really understand how this works, but
an anagram of 'art' is 'tra' which is located in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for sutra that I've seen before include "sacred text" , "Ornamental arm band" , "Sanskrit aphorisms" , "Book of aphorisms" , "A Buddhist scripture" .)