What a Black Lotus: The Eldest Senior Sister Is Beautiful and Fierce

[Strong female lead + female lead is a scheming black lotus + nurturing romance, with a woman raising a man]

You Lian was a primordial spirit born of heaven and earth, a twin black lotus whose source controlled the power of death. She was powerful and shrewd.

After she transmigrated to another world, a realm of cultivation, she didn't want to be the junior sister, so she beat up the senior brother and “usurped” his position to become the senior sister.

She coaxed a purebred little black dragon from the Demon Realm into coming along with her, originally planning to use its blood whenever she needed to nourish her source.

But things turned out like this: other people raised spirit pets, while she raised a little black dragon...

A rather unusual nurturing romance.