Toshiro took a day off and went to the human world to visit his grandmother. He met Karin, she asked to play with them, which he did. Then they were sitting by the river and Karin was attacked by a hollow. Toshiro quickly dealt with him then asked Karin

Toshiro: Hey, are you okay?

he walked over to her and held out his hand to help her up. This is not normal behavior for Toshiro, he seems to have some feelings for Karin