The man knew if he wanted more power the best way was to steal it then he heard the rumors about some spiritual key with great powers to the one holding it. Gouki had actually befriended a shinigami into helping him get into the Soul society undetected if they found him he would surely enough be killed. Gouki kills the shinigami hoping to leave blood trail behind it was time to end this rage of his once and for all if this didn't work maybe he'll find a woman and settle down. Gouki been thinking his friends have been worried sick about him because of these dark hearted powers he gained over the years maybe this was his last chance to do. Gouki knew this would the right spot in the heart of Seireitei now this could get him or land him into some hot water. He didn't care he was ready give up if this didn't work at all. Gouki started screaming for help hoping to get some attention then a bunch of squad members started running to his location.
"What are yelling for help for? Are you injured human? Do you need assistance?" Shinigami said. "Yes, I looking for the Oken now be a good shinigami and tell me where it is so I can be on my way" Gouki said. Then they started to draw their zanpakuto asking Gouki to stand up that was classified information and they wanted him for questioning. Gouki didn't feel like playing cops and robbers with them but he did stand up and then started to raise on hand thinking the time has come. Gouki yells out "KAGE MESSATSU". Gouki started screaming in pain and many shadows started forming around the reiatsu human until they form one big long shadow. The little shadow spirit dissapears also Gouki dissapears too. The shinigami thought the human was gone for good but they were so wrong.
A monster appeared looking half human and all dragon with four dragon heads upon the monster's backside as the beast unleash shadow reiatsu bomb on the area. Massive blast wipe out the squad and some survivors were calling for help. Dragon Gouki thought it was mere foolishness on their part thinking they could take him down but now it was onto business. He knew the Oken was here and he needed to find it but maybe searching the division room the monster would have better luck.
Home 
