Eun Ju is the darker coloured one and Yeong Ju is the lighter coloured one with a bit of a comb. Yeong Ju (who also happens to be the prettier one) is a real bitch to Eun Ju, pecking her and generally tyrannising over her. But while Yeong Ju does a runner when the cat comes a-prowling, Eun Ju stands her ground and gives him the eye...quite a profound lesson to be learnt indeed...
Chja popochka...?