Oh no! My online romance partner is actually a Miao holy maiden!

[Rating just released, will rise later] + [Yandere] + [Single Female Lead] + [School Life] + [Slice of Life Romance] + [Girl Chasing Boy] + [No Cultivation]
After dating online for half a year, Xu Yi became addicted to making empty promises, calling the innocent young girl from the mountains "wife" every day.
"Baby, once we meet in real life, my life will be yours!"
Today, the two officially met in real life.
Upon seeing the Miao holy maiden before him, Xu Yi's legs went weak on the spot.
The saintess smiled sweetly: "Brother Yi, you said your life belongs to me, and that you would take care of me for the rest of your life. If you don't marry me, the princes say they'll borrow your kidneys to feed the zombies."
Oh no! My careless talk backfired; my online crush turns out to be a Miao saintess who has mastered the Gu magic of the Ten Thousand Mountains!
The eldest brother wields a Miao sword capable of slaying immortals, the second brother carries a zombie on his shoulder, and the third brother's hands are covered in deadly poison... They are on their way with their swords drawn!
Under the "nuclear threat" of the entire mountain village, Xu Yi was on the verge of tears: Brothers, I'm waiting online, I've deceived the Miao holy maiden's feelings, what should I do?!