Who are you?- A KaiGyu Fanfic(REMAKE!!!)

Kaigaku was just about to get killed, but he didn't die. Instead, he appeared months ago before the original upper moon 6 deaths.

-Who the hell are you!?- KaiGyu story!

This book is old and bad, i don't recommend reading it.(pls don't), rewriting... Kaigaku gets teleported to the past in midle of a fight! a fight with the past uppermoon 6? he's able to save them. why and how did he get here, he doesn't know. And maybe saving them was a mistake and he could change the future but he c...