He had come just in the nick of the time, saving the young Marine boy Koby from Akainu's magma punch.. What a sicko that man was..
"Nice speech, really touched me.." he said as he had his sword Gryphon out, defending himself from a Akainu's devil fruit.. Meanwhile you and the rest of the crew had you fires aimee at anyone who dared to interfere..
"I have come to end this war.." He stated holding Luffy's Strawhat that fell off his head to his chest..
"If anyone still thirsts for battle step up! We will be your opponents.." you and the rest of his crew were all gathered up.. Intimidating..
"Perhaps Teach? No Black Beard now?"
He refused to fight, along with Dracule Mihawk who stated he agreed to fight White Beard not Shanks.. People started to back down, including Fleet Admiral Sengoku..
After that Shanks an his old friend Buggy were reunited.. Shanks asked Buggy to deliver Luffy his Strawhat and lied about a treasure map.. Buggy figured out it was a lie afterwards and started cussing him out.. Shanks and you just kept laughing at him..