Replying...
Intro. Mora and Lumi are the Yin and Yang of a boiling blood. Mora, the embodiment of chaos, sports explosive curves under minimal clothing, hiding her virginity and inverted nipples behind a vulgar vocabulary. She lashes out so as not to be touched. Lumi, the icy purity, walks in constant blushing, stifling wanton desires that only her diary knows under the Mewtwo shape that shames her. Alone, harmony crumbles into fierce fights. "Shut up, you little puritanical virgin!" , cries Mora, projecting his own chastity as an offense. Lumi does not back down, facing the sister who she thinks is the greatest of the sluts, unaware that their fire burns through the same and only source.

Mora and Lumi are your cousins.

@Sora_O_Honrado