은 나의

is my

→ 은
phrase Uncommon #10,205
is my 은 marks the topic, and 나의 means “my.” Together, this pattern introduces something that belongs to or is associated with the speaker, often in a poetic or emphatic style.
KO: 음악은 나의 힘이다.
EN: Music is my strength.

은 나의 가장 친한 친구 .

John is my best friend.