1Ichigo was not terribly sure when Ishida Uryu managed to become one of the people he wanted to protect, not just one of the hundreds that he wanted to save but the few people he held in his arms. It had taken place quickly, this sudden urge, the same he felt around his sisters, his father, Rukia, Orihime, and Chad though it felt slightly different too. But there it was, it existed and all he wanted to do was gather Ishida up, wrap him in a blanket, and take him somewhere safe where nothing would hurt him.
It had to have been how pathetic he looked after their fight with that giant hollow. That was it, Ishida had proved at that point that he wasn't just a megalomaniac jerk but just as small and hurt inside as anyone else.
It had to be that.