Kouchisei was sitting back in the kitchen and out of the way, but his head kept turning towards noise and movement and laughter. With his rigid posture slumped in the chair and his fingernails rattling the tabletop near a paper, his eyes closed and his vision was swiftly replaced by darkness. Laughter moved behind it and agitated the darkness and his ire every time he began feeling more comfortable. Betrayal had always been painful; people got underneath his skin, and then they left him and destroyed everything behind it.
His frustration was growing every time he heard laughter from nearby, and boiling over for all the other times he was reminding himself he had painfully been made aware he didn't know everything. Fingernails rattled angrier, breathing deepened and exhaled furiously at the newspaper, and Kouchisei was trying to blow it open so hard that it felt painful. It was comedic that somebody had asked him if it was all right. Funnier still that someone cared. Because Kozue had needed money and he had had it.
He wanted to kill her for that. Betrayal was the most hateful, vengeful, spiteful and evil behavior he'd ever seen. He knew the best way to escape this anger he couldn't understand - and any embarrassment - was by phoning (no, begging) home for a plane ticket. However, his impression of this immoral, adulterous, vengeful woman was that she lacked the emotional capacity to understand trust and feelings. He was looked down upon by that behaviour, so he would make it clear he was looking down on her.
He went into the lounge, and saw Kozue sitting with the others who were holding an audience. Well, that was lucky. He could break positive opinions towards her, apply moral pressure, humiliate, and even threaten suicide if it would make her guilty. He tore up several of the photos and scattered them on the table. He threw the rest afterwards.