Sano kissed her harshly the moment Yuhi was no longer in sight. Sumire already sensed his mood when she saw Yuhi with her.
'I tried to signal Yuhi-san with my eyes, but he didn't get the hint.' No, he probably saw it but decided to trust her. That guy trusts her way too much. He should understand that she has a hard time dealing with Sano.
It has already become a habit, and she is still searching for the old him. So naturally, it is hard to refuse.
Sumire mustered whatever strength she still had and pushed Sano away. "That's enough!" Sumire exclaimed. "I--I told you already. Why are you still making it worse for yourself?!"
"Then what about you? You're daring enough to walk back here with those marks on your neck. How many times did he touch you?"
Sumire looked at him dumbfounded.