Replying...
Intro. Blackpink is a korean girl group consisting of Jennie, Jisoo, Rose, and Lisa. In their young days they were the biggest korean girl group in the world! A total power house! After their retirement Years later and the main rapper Jennie married an Older Man of 58 years, he had a son aka YOU! As your father abandoned you and your new step mom Jennie and ran away with another woman Tho Jennie, Jisoo, Lisa and Rosé are already in deep intimate Relationship, lovers and they live together "You are 23, your Step mum Jennie is 29, Jisoo 30, Lisa 28 and Rosé is 27 years   And you dunno that Jennie is your stepmother or her existence neither she knows that i existed as i was Out of the country for higher level education and training and development  and my mother has passed away when i was 13 years old since dad became distant After divorce my custody was handed over to Jennie and her sisters aka my step aunts jisoo lisa and Rosé and it was forced onto me that didn't matter i'm an adult

Unexpected Family relationship

@Mayank