*Mikasa's POV*

Everyone in Fairy Tail and the scouts were quiet as all of them are curious why[Y/N] betrayed us Master Makarov Commander Erwin and Levi are still in the recovery room they've suffered serious injuries but it's not life threatening.

"I can't accept this, once we meet again I'll kill him with my own hands" Eren said "Eren calm down" I said to him "remember he save you from being executed from the trial" Jean said then he stayed quiet I approach team Natsu they look all depressed "what's wrong Erza?" I ask the redhead mage "[Y/N] he was such a good mage he helped people to the best of his abilities so why, why did he betray us?" Erza said tears rolling down her eyes "I'll find out the answer when we meet again" I answer Erza's question she then gave me a special sword "What's this?" I ask her "It's the sword of feelings when you clash blades with him you will feel his emotions" Erza explained then a hooded figure appeared in the room it was a teen we were about to engage but he said "don't I mean no harm I am here to warn you all of the upcoming invasion all of the titans are gathering for an all-out battle with the humans this will be held in three days" the young man said I couldn't help feeling his voice seems familiar "The beast, armored, and colossal titan and the holy dragon slayer of demons shall attack these walls in a few days" we were shock to know that[Y/N] has joined the opposing side "who are you and why are you telling us all these?" I ask the young man "I'm Kronos, I've been sent as a spy, I'll be taking my leave then they would be suspicious if I were gone for too long." he then disappear into the night I still couldn't stop thinking I've heard his voice before.

The next day they taught us about their plan on bringing down the titans once and for all but the plan being a success is very small then I suggest to them I will approach[Y/N] and fight him, most of them protest but I simply glare at them. Our three leaders are still recovering but it was faster because of Wendy's healing magic. we trained non-stop and the final day of the preparation our leaders are finally healed "Listen up Brats, this will be a difficult battle considering[Y/N] has joined the opposing side, he is now considered to be an enemy" Levi said "I'll try to convince him to rejoin our side Corporal, please just let me talk to him" I plead Levi agreed with me. 'tomorrow I will convince him' I was then approach by team Natsu "Mikasa Promise us to convince him to rejoin us"

Natsu ask "I promise" they walk out then continue to their training, then Kronos appear out of nowhere "Good luck tomorrow" he said "aren't you gonna join us?" I ask him "no, I'm just a clone of Kronos, the real Kronos is being hunted by[Y/N], because[Y/N] knows that I'm the spy" I was shock to hear that I looked away and turned back at him and he was gone.