After years apart, Sasuke initially fails to recognize Sarada and nearly attacks her , mistaking her for an enemy.
His aloof nature is shown as a form of self-punishment and isolation to protect the village from the Otsutsuki threat. Boruto: Naruto Next Generations (Dub) Episode 21
Sarada confronts Sasuke about his absence and her parentage; he dismissively tells her it has nothing to do with her , leaving her emotionally devastated. After years apart, Sasuke initially fails to recognize
The emotional weight of the episode stems from her desperation for a bond with her father, which triggers her Sharingan's further development. After years apart