There's a saying online about relationships with yandere characters:
"I like yanderes: that's a story. A yandere likes me: that's an accident."
Unfortunately, Xingyue Qiwu's life is an accident waiting to happen.
After becoming an immortal witch, she thought she could use her endless lifespan to do things she'd never done before, like cuddling up with girls and falling in love with them a billion times over.
That's the dream, right?
But Xingyue Qiwu was wrong.
In these circumstances, immortality might be an even harsher curse.