Stronger

Itachi who pokes at Sasuke’s forehead. That gesture shows clearly the relationship between the siblings.
Even within the ‘strongest’ Uchiha, Itachi is still the stronger. That brother is the object of idolatry for Sasuke as well as that of jealousy. With his brother as his goal, he develops step by step. Because of his brother’s great existence, his father did not look at his own existence. Anyway, his brother exists and so does he. Itachi was everything his world for Sasuke.
The day Itachi killed his family and the clan a bloody shadow settles in his mind. As long as his brother’s existence does not disappear nor will this shadow.

Second Databook