For starters, they only know young orphan is from this city (5)
I believe the answer is:
tokyo
'from this city' is the definition.
'Tokyo' can be an answer for 'city' (Tokyo is an example). I am unsure of the remainder of the definition.
'for starters they only know young orphan' is the wordplay.
'for starters' suggests taking the first letters.
The initial letters of 'they only know young orphan' is 'TOKYO'.
'is' is the link.
Can you help me to learn more?
(Other definitions for tokyo that I've seen before include "Far Eastern capital" , "Capital of Japan" , "eastern city" , "Large Japanese city" , "Kyoto (anag)" .)