Instrumental particle (Korean)

The Korean particle -(으)로 is used to express what it is something is done with, what something is done into, where it goes towards, what is used, what it is done as, or what it is due to. Generally, the uses of -(으)로 can be split into directional and instrumental.

저를 친구로 생각해요?

Do you think of me as a friend?

References