Part 2.
However at the end of the Chaos Arc, Pit knew that the only way that Chaos could die is if he himself died, but that would've also killed Dark Pit as well, and that would've disrupted ALL balance, and would've prompted another Uprising from different gods, but it was the only way. Except.. Dark Pit had some sort of a plan. He brang a Drink of the Gods with him, just in case if he himself nearly died, but he died far to quickly before he could use it. He eventually found himself in a situation. Give up and team(unwillingly) to Chaos, or go full in and do a s-side mission. However, he kicked himself out and went to the Sanctum which, was slowly dying due to Chaos' corruptedness. Thankfully, the Rose Blade was still in good condition, so he grabbed it, and flew back to the battlefield.
Now with the Rose Blade, Pittoo went into battle against Chaos, who was immediately taken aback by the Rose Blade, and was terrified of it, since it could hurt him, but not his host. Dark took advantage, and struck when he could, weakening Chaos. Eventually, Pit managed to fight someway through the control, and ask Dark to simply end it. However, Pittoo was hesitant, since he knew if Pit died, he did too. But he had to do it. Rising his Silver Bow, splitting it in 2, he dug the blades into Pit's chest, causing the 2 scars he has now. The damage was quite severe, and effected him in different ways. But Dark realized he could finally use the Drink of the Gods, and quickly poured it into Pit's mouth, before he could faint completely. Dark drank some himself, but gave the rest to Pit.
The 2 layed there in complete numbness for a while, before Pit woke up, dragged(flew) himself to the Rewind Spring for further healing until he flew back to Skyworld, where he collapsed in front of his goddess, holding Pittoo(who was still asleep) in his arms. Pit entered a 3 week coma, and his heart was lost several times, but woke up being hugged by Pittoo, who was sleeping, but Pit didn't dare to wake him.