Norway feels strongly for Iceland, whom he sees as a younger brother to him and as being very important.[7] In return, it is said that Iceland considers Norway to be the home where his heart truly is.[18] It was later revealed that Norway and Iceland are indeed "biological" brothers due to Iceland having been discovered by Norwegians[19], though Iceland became irritated at Norway's insistence to refer to him as a big brother ("onii-chan").[20]
Norway feels the need to take care of him[7] and still sees him as a child, a thought that Iceland finds unpleasant.[21] One cannot tell if he yields to Norway.[7] The two of them also frequently fight over mackerels.[6]