South Korea remains “the enemy” of North Korea despite recent moves by Seoul to ease tensions along the 38th parallel, the powerful sister of North Korean leader Kim Jong Un said in state media Monday.

Kim Yo Jong, the influential sister of North Korean leader Kim Jong Un, said Monday that Pyongyang had "no interest" in efforts by Seoul to improve relations.

National Assembly Speaker Woo Won-shik said Wednesday that communication channels between South and North Korea should be kept open even as inter-Korean relations have been frayed. Woo's remark came two days after Kim Yo-jong,

South Korea is studying various plans to improve relations with North Korea, a spokesperson for South Korea's Unification Ministry said on Monday, in response to a media report that Seoul is considering allowing individual tours to North Korea.

In an unusual move, Seoul’s foreign minister visited Tokyo before Washington, as the Asian neighbors emphasized the importance of maintaining stable relations.

For the first time since South Korea’s new president assumed office, Pyongyang explicitly nixed the Lee administration’s pro-dialogue approach to North Korea.

Experts say the comments suggest that North Korea has no plan to return to diplomacy with South Korea and the U.S.