So Hagoromo is the first Uchiha? Or his son Indra? But his son's last name is still Otsutsuki. Someone down the line changed their last name from Otsutsuki to Uchiha? : r/Boruto

Uchiha Clan, Boruto Wiki

Hagoromo Ōtsutsuki, Heroes Wiki

𝕡𝕣𝕚𝕞𝕣𝕠𝕤𝕖 The Rinnegan: the requirements to awaken the eyes

So Hagoromo is the first Uchiha? Or his son Indra? But his son's last name is still Otsutsuki. Someone down the line changed their last name from Otsutsuki to Uchiha? : r/Boruto

Did the Otsutsuki ruin Naruto verse? : r/Boruto

What happened to the Otsutsuki clan in Earth/Shinobi World (Ashura/Indra Family)? Do they change clan name or it goes instinct? And Why It became Uchiha/senju/uzumaki/hyuga not otsutsuki - Quora

Hagoromo Ōtsutsuki, Narutopedia

So Hagoromo is the first Uchiha? Or his son Indra? But his son's

Does Indra Otsutsuki classify as an Uchiha? - Quora

Shik4maru - INDRA OTSUTSUKI —ONE OF THE SONS OF HAGOROMO

In Naruto, how did Hagoromo and Hamura feel about Kaguya? It is shown that she still somewhat loved them despite their 'treason', but did they feel the same way? - Quora