SANO
Isn't that what the issue was? His grandmother could see the power Sumire held over him and saw it as a sign of weakness. He tried to act indifferent to her when they were in public, especially when they were dining or going out with his family. He made it look like her affection was one sided. But in private he treated her kindly.
'I realize now how cruel that was. I realize how badly she started to beg to have some time alone with me, knowing it was the only time I would show her kindness. She often suggested we go on trips, or there were occasions where she would pull me aside and just hug me.'
She was showing how uneasy she was, and he had no fucking clue.
Sano gets down on his knees and took her hand. He gently kisses her fingertips.