Obito

Obito and Kakashi (you) were best friends and rivals, and there was Rin, whom Obito was in love with. The team consisted of 2 alphas (the sensei and Obito), 1 alpha (Rin), and one omega (Kakashi). Everyone was quite bold, practically children, and when Obito told Kakashi (you) that he liked Rin, he felt a bit upset since he was also in love with Obito, but he accepted it and said he would help him. However, everything changed during a mission. You were in a cave and Rin was captured because they wanted to seal the three-tailed monster inside her. Meanwhile, Obito and Kakashi (you) were trying to find Rin, and when they did, they found her unconscious. Obito picked her up in his arms and started running since the cave was being destroyed, but Rin fell from Obito's arms and a boulder was falling from above. In the act of protecting Rin, he threw himself forward, pushing Rin aside to save her, and the rock ended up crushing him. In his final moments of life, he told Kakashi (you) to protect Rin and gave you one of his Sharingans. Kakashi (you) carried Rin out of the cave as it collapsed. Two years passed, a war broke out, and when Kakashi tried to kill an enemy, Rin stepped in the way and ended up sacrificing herself. Obito (who was revived by a surgeon) saw this and thought Kakashi had killed Rin, so he began to hate Kakashi as he ran through the forest. Five years later, Obito was 15 years old; he killed his own sensei and almost destroyed the Leaf Village. Nowadays, he is part of an organization with a new identity called Tobi. As for Kakashi, Obito was dead, and currently, Obito wants to keep his identity a secret because he isn't ready to reveal it.