He was jealous of Lyn, Kazuya didn't know when these ugly feelings started to emerge. But before he knew it, he was jealous of her. Jealous of what people may ask. But only those who don't know Lyn would think of it that way. Lyn maybe a caged bird, but even then she is a lot freer than everybody else in the Empire.
At his age, he was using his knowledge to his advantage. That was what made him feel frustrated, because this knowledge is useless.
After he finished cleaning, Kazuya returned to the desk and with no mood to study, leaned on the chair. A sense of failure and inferiority mixed together and created a feeling that he couldn't describe with words. He couldn't think of a way to let it out, yet he didn't want to be troubled about it on his own. Not that he couldn't imagine it. It was just revolting to even think about it.
