What Should I Do If I Fall for My Sister-in-Law?

[What Do I Do If I Fall for My Sister-in-Law?]

The wind carried the scent of Shui Gui. It was unlike any perfume or other fragrance, a unique smell of mountain herbs.

For a moment, Liang Yin was led astray by that scent. Almost without thinking, he followed it and breathed it in. When he finally came to his senses, he jerked awake to find that his nose was almost touching the back of Shui Gui's neck.

Liang Yin's expression turned simply awful.

What was this? What did this mean? Was he out of his mind? How could he actually feel that way about...

_

When Liang Yin was eighteen, his older brother brought home someone extraordinarily beautiful after a trip to the mountains.

For many years afterward, Liang Yin thought Shui Gui truly was some bewitching mountain spirit, appearing amid the thick fog between the ranges.

TIPS:

1. The love interest is an exceptionally beautiful man, and at first he's dating the protagonist's older brother.

2. One-on-one romance, both leads have only been with each other, happy ending.

3. I'll add other content warnings if I think of any.

Theme: There is someone on the mountain slopes, wearing mistletoe and trailing dodder.