How did Izuna Uchiha -younger brother of Madara Uchiha die? Was he killed by Tobirama Senju or by Madara himself when he seized his eyes?
According to Itachi, who was trying to scare Sasuke, it was Madara taking Izuna's eyes, But according to Hashirama, the guy who was there, it was Tobirama.– RyanNov 30, 2016 at 16:26
So then how did Madara get eternal mangekyou sharingan?– Milap JhumkhawalaNov 30, 2016 at 16:27
obviously, he took Izuna's eyes after izuna died, exactly like sasuke did. the battle had Tobirama fatally wound him, and they retreated. We find out Izuna died in the next battle.– RyanNov 30, 2016 at 16:28
During a battle with Tobirama, Izuna was mortally wounded by Tobirama's technique.
With Madara quickly rushing to Izuna's aid, Hashirama pleaded with Madara to come to peaceful terms. Seeing his brother begin to consider this offer, Izuna told his brother not to listen to their lies, ultimately making Madara retreat with Izuna.
Madara later revealed that Izuna died from the injury. At the last moments of his life, the dying Izuna had given Madara his eyes so his brother could obtain the Eternal Mangekyō Sharingan to protect their clan.
Because of the blindness caused by overuse of a Mangekyō Sharingan, many people came to believe that Madara took Izuna's eyes by force to regain his sight.