Naruto's focus shifted to Sasuke, neglecting side characters. Sasuke's control, power, and cold demeanor set him apart from Naruto. Sasuke's selfish manipulation of others highlights his dark journey.

In Naruto and Boruto, Sasuke Uchiha is one of the strongest Uchiha who possesses great power and the Rinnegan. Yes, he does indeed lose his Rinnegan.