You Do Need power plug adapter while traveling from Aruba to South Korea.

Here is Why You Need An Adapter

The outlet and plug type used in South Korea is F and in Aruba are A, B and F. This is how they look like.

Aruba

In Aruba, outlets of type A, B and F are in use.

Type A

Type B

Type F

South Korea

In South Korea, outlets of type F are in use.

Type F