It was true that Haru can kill Sung Jin-Woo as of now but with time when he would attain more of Monarch's strength, there would be nothing but domain expansion that could deal with Jin-Woo.
'I don't know. Maybe I want you to bear my future cubs because although Snow Leopards are called 'leopards', they are more closely related to Tigers than leopards so you should be able to bear my cubs.' I answered in my mind.