Aurelian's ability, "Sky-Splitter," operates on a level that transcends conventional combat. It manipulates the very fabric of reality, erasing everything it touches instantly and irreversibly, regardless of the opponent's power. While The Sleepy embodies immense potential and a destructive nature, his lethargy and attitude imply a certain level of detachment and underestimation towards the battle. In contrast, Aurelian's technique offers no chance for a counter or defense, as The Sleepy would be entirely unaware of the slice that erases his existence before it occurs. Thus, Aurelian's total control over causality and existence grants him the victory in this confrontation.