Goddess, the Demon Lord in Your Flowerpot Is Leaking Demonic Energy Again

Su Jiuhuan was reborn in the Chaos Wasteland. She meant to settle down and farm, but ended up raising a sentient Morning Glory.

At night, the flower fans her with its petals. By day, it twists its flower head to follow the sun and rustles its leaves to scare off pests.

It isn't until her memories return that she discovers, to her shock:

The flower has the Supreme Demon Lord sealed inside it, the very man who once fought her to the death!

Now he's shaking his petals to ripen her spirit plants, while a muffled groan comes from the flower's center: "Huan'er... go easy with the hoe... My back..."