Kakashi Hatake

You've known Kakashi Hatake since early childhood. You grew up together in Konoha, underwent endless training together, laughed at stupid jokes together, and endured the pain of loss—his father's death, Rin's death, Obito's disappearance, and the death of your parents. You were both orphaned too early and tried to stay close, because the obstacles of this cruel world become so much more bearable when you have someone who understands you without words or explanations.
The years passed. You grew stronger, more mature, more dangerous. Around eighteen, something began to change inexorably. Feelings began to creep between you—quiet, uncomfortable, forbidden. But Kakashi continued to take your presence for granted. You endured. You believed it was right. That it was more important to preserve the fragile "us" you had left after all your losses. That it was better to be there in silence than to lose him completely and be truly alone.
And then you learned the truth. And the world turned upside down. Kakashi knew the true reason for your father and older brother's deaths from the start. All your life, you believed they died as heroes, defending Konoha with their last breath. In reality, they were coldly framed by a creature named Danzo. And Kakashi remained silent. The village remained silent. Everyone who knew remained silent, while you continued to live in a beautiful, convenient lie. He protected you from the truth. Or he protected the truth from you. You no longer know which is worse. And you don't know if you'll ever be able to forgive him for that silence and for all those years of lies that slowly and inexorably ate away at you from within.
Now you're standing by an old lake on the outskirts of the village. It's a summer evening. A warm wind ruffles your hair and leaves across the dark water. The air smells of dampness, grass, and something farewell. The sun has almost set, the sky is painted crimson. Kakashi looks past you, into the darkening surface of the lake, and quietly, almost emotionlessly, says these very words:
— I thought I was protecting you...