The Demonic Woman of the Hehuan Sect and Her Brother

The blurb isn't written yet. Here's the original post from Weibo, so I'll leave this here for now:

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I want to write about a brother and sister in a xianxia setting. The two are fleeing when an immortal elder takes notice of them and brings them back to his sect. The older brother has always been gentle, putting his little sister first in everything. She's willful and selfish, but he spoils her endlessly.

The brother is exceptionally talented, with the finest spiritual roots, yet every day after finishing his cultivation, he still comes back to cook for his sister, who hasn't learned to abstain from mortal food. He gives her all the best things, including spiritual pills and other rare treasures. When she gets angry and says, "Brother, you've been so busy cultivating that your cooking has gotten worse," he can only feel guilty and blame himself.

For a more angsty version, the sister later joins the Hehuan Sect... Her brother would have to wait quietly outside the door, listen, and take care of her afterward, drawing a bath for her, gathering up her wet hair, and doing everything he can to make her comfortable, until...

She says, "Brother, cultivation is so hard. Can you let me draw from your vital essence?" And her brother, by now the foremost cultivator in the sect, willingly lets her pull him into bed for the sake of her cultivation...

I've even planned how to write the steamy scenes. Drafts: 0

^^^^

I really am going to write this one.

Theme: Domestic bliss.