Post-OOTP. The episode in the DOM has left Harry a changed boy. He returns to the Dursley's to prepare for his inevitable confrontation with Voldemort, but his stay there is very short-lived. He finds himself in the care of people who he has no choice but to cooperate with and they give him a startling revelation: Harry must travel back to the 1970's to save the wizarding world.

Reborn had admittedly heard that his new pupil was a difficult one. He just hadn't thought his largest hurdle would be to make Tsuna give up his dream of becoming the pirate king. AU where Monkey D. Luffy was reborn as Sawada Tsunayoshi