When Hino went to Sumire's room, he found Sano had Sumire pushed against the bed frame, and he was kissing her deeply. This sight didn't surprise him. He should have known that Sano would do this.
"You're so pretty. I'll use my tongue more; you're okay with it, aren't you?"
This is not the first time he is seeing them like this. In Sumire's words, Sano was a kissing monster who had a bad habit of randomly kissing her.
But there was a problem, her gaze seemed hollow and lifeless. Hino quickly yanked Sano away and shook Sumire's shoulders.
"Hey, Sumire? Sumire?" Hino tried calling out to her.
She was looking at him with her eyes wide open. But it felt like she wasn't really there.
What's wrong with her? He has never seen her like this.