Itachi and Jiraiya stood multiple meters from each other just close enough to stare each other in the eyes. Itachi felt very uneasy for the fight, Jiraiya was just relieved to get revived by Bijuubies to have a decent fight for once.
"You think I'll need the Ni Dai Sennin for this?" Jiraiya asked wondering, a loud voice echoed as if it was coming from anywhere at once. "Lol its fucking Itachi" said the voice, it was Bijuubies, since he's God of this world. "It's best not to underestimate him anyway.."
"It's mother fucking Itachi." Bijuubies reminded him.
Jiraiya winked.
Itachi from the get-go started stomping on the ground, Jiraiya had no idea what was going on, he decided to shout to ask, "Something wrong?" Normally he would be weary in case it was a jutsu, but anyone could clearly tell this was no jutsu.
"WHY WON'T TSUKUYOMI WORK!" Jiraiya was staring him in the eyes the whole time fearless, apparently Itachi had activated Tsukuyomi approximately 32 times and stabbed Jiraiya repeatedly for 2 years, yet he came out unscathed and continued to talk to the omnipresent god of the Fanfic as if nothing happened.
Itachi shouted in a blind rage, "DAMMIT!" along with his voice came a large maroon construct of chakra flowing with anger and power, the Susano'o. "Very well! I'm going to use Susano'o, since Tsukuyomi is too good for you!" Little did he know, Amaterasu was also activated but Jiraiya's level of awesomeness instantly doused the unstoppable flames as hot as the sun.
Jiraiya was laughing in mid battle, "Well maybe it is alright to underestimate him after all!" He was cut a bit short by the large sword of Totsuka bursting out of the bottle and stabbing Jiraiya through the chest. Well, it was what Itachi thought was through his chest.
"Take this!" Jiraiya grabbed the Totsuka as it was inches away, lifted it up as the entire Susano'o lifted into the air soon following. Jiraiya swung in the direction of the ground with the sword as Susano'o proceeded to crash into the ground(and into Itachi) and shattered, leaving nothing behind. Itachi now lie on the ground after getting literally bashed by his own spiritual chakra entity groaning with pain.
Jiraiya instantly appeared in front of him. Famous chakra swirled at his fingertips, as he raised his hand into the air above him. A rasengan was formed though it enlarged in a moment's notice, it became as large as a planet, the only thing visible due to its size was nothing but a wall of chakra for what seemed like would never end. Jiraiya was holding up the planet sized rasengan. "I probably shouldn't put this much effort into finishing off an opponent who's already immobile but.." The rasengan proceeded to instantly shrink into a small ball, the basic size for a rasengan. A crater the size of a city abruptly exploded under them because of how much the rasengan was compressed with power. Itachi and Jiraiya fell the distance of the newly formed crater taking the ground directly from under them and landed, Itachi hit the ground hard. "I wouldn't really call this effort.
"So... is there anything you want to say before I kill you?"
Itachi, lying face first on the ground, tilted his head up and stared Jiraiya in the eyes. Giving his last breath, the words slowly and somewhat rough due to his pain, were spoken. "I...came."