(Y/N L/N a.k.a Jing Yuan used to date with Weiss, but then he finds out she cheated on him with Neptune while talking crap about him.)
Y/N: So this is what the Ice Queen really thinks of me, eh? Very well, I'll make sure she regrets it.
(He prepares to leave Beacon Academy while exposing Weiss' affair with Neptune, causing everyone (minus Team CRDL) to ridicule her.)
(He then returns home on Xianzhou Loufu and meets his friends.)
Yingxing: Welcome back.
Dan Heng: (notices his sadness) What's wrong?
Baiheng: It's about Beacon, right?
Jingliu: Be honest, my pupil. What happened back there?
(Y/N tells everyone what happened at Beacon, especially between him and Weiss. When he told this to his best friend Fu Xan, she got totally pissed.)
Fu Xuan: I should have known. Those bastards were always rotten eggs.
(She then leaves to deal with the Beacon Students.)
(Back at Beacon, the students are seen minding their business, except for Weiss, Team CRDL and Team SSSN who are bullying other students. Suddenly Fu Xuan.)
Fu Xuan: THERE YOU ARE!
(They turn to see her.)
Weiss: Who are you? What are you doing here?
Fu Xuan: I am the only one who can fix his broken heart. And I'll start it by breaking each of of you!
(She starts fighting and easily defeats the Beacon Students as she brutally kills Weiss, Team CRDL and Team SSSN in front of them while laughing maniacally.)
(Some months later, Y/N and the High-Cloud Quintet are seen preparing to destroy Atlas.)
Y/N: This is it.
Yingxing: Let's destroy them.
Dan Heng: Ironwood is gonna pay for what he did to my tribe!
(As they start their attack, Fu Xuan dodges an attack from Weiss.)
Fu Xuan: So Salem decided to find some use for you, eh?
Weiss: You will die, and then all of your friends, especially that worthless ex of mine!
Fu Xuan: I will stop you. I did it once!
Weiss: Not this time!
(They fight, but Fu Xuan manages to overpower Grimm Weiss, and then she kills her again before setting towards her family as she kills them as well.)
(After Y/N and the High-Cloud Quintet destroyed the rest of Atlas and kill Ironwood, they return to their home, and Fu Xuan confesses to Y/N, who accepts her love. They then started living happily, but Fu Xuan won't hesitate to kill anyone who comes between them.)