Ouroboros Spine under divine law of the opus magnum

It wasn't that her accomplishments weren't good enough. Mordecai did not consider them to be extraordinary because they mirrored his own. He had not strayed from the Spine either, and the same also applied to Kaname and Sitri. They had stuck together through thick and thin, regardless of how they felt about one another. To him, that did not make her devotion any less than their own. But it was more than that to him, and he whirled around on her with teeth beared and anger unbridled at her protests. His movements were fluid and precise, and Mordecai moved to push her to submit with them.

“You just don't get it,” he growled. “You can't just walk up, throw down your title that you've held and expect me to give you everything you want. You can't even respect me.” And if she didn't here, it would only get worse for them both. Mordecai was not beyond violence to get results, though it was not an option he admired and teased often. It was a rare thing and this time, seemed reserved for Cara to provoke. He had enough of her badgering for the day, enough of her belief that she could so freely walk over him, throw her accomplishments in his face, and reliquish a title she had no right holding. And yet still expect something.

It wasn't her title or accomplishments that he cared about, it was her behavior.