[ReaperxKingx]

Have to agree with KuroiHikari, she only acts and abuses Kamito when he does perverted things and not paying attention to her. She can act quite cute like a kitten if she gets what she wants.

Spoiler for Evidence:

"I...I meant just that. Kazehaya Kamito, I welcome you to my team. Because you defeated that military-use spirit, I have no objections about your ability."
Ellis rapidly said so and quickly averted her eyes, looking far away.
It seemed that in truth her intention was to scout Kamito.
With a sword thrust at the back of his neck, rather than being scouted, it was like he was being threatened.
Ellis' results were restrained by the upperclassmen and were top class. If Kamito joined this team, it was certain that the likelihood that he would obtain the entry qualifications to the blade dance would greatly increase.
However—
"Ellis, I—"
"No way, this is my contracted spirit after all!"
The one who interrupted Kamito's reply and shouted was Claire.
She stood up from the chair and tightly grabbed the sleeves of Kamito's uniform.
"Claire, you..."
Kamito turned around and looked down and his eyes met her clear ruby pupils.
Claire's eyes seemed to be swaying in anxiety.
It was likely that she was not aware of it, but she was staring with a clinging look.
I see, she's...
It was surely that being betrayed by her sister, Rubia, caused her heart to be deeply wounded.
Being abandon by someone – something like that, being frightening to her, could not be helped.
That was why she was always in solitude. She could not depend on anyone.
Because she was afraid of being betrayed again—
"..."
Kamito –
Took a sharp breath and scratched his head.
...Being shown such a face...
While bitterly smiling, he gently placed his hand on top of Claire's head.
He had decided on the reply from the beginning. She did not have to be worried.
"Ellis, sorry but I am her contracted spirit. I don't intend to change teams."
"...Kamito!?"
Claire, taken aback, raised her face and widened her eyes.
"...I see."
Ellis tightly bit her lips.
However, by the next moment, she had already returned to her cold expression.
"...I understand. I'm sorry for asking something unreasonable so suddenly."
"No, me too ... thank you for inviting me."
Kamito apologized and Ellis was a little bashful.
"I...it's alright. Y...you are such a guy, therefore, I—"
"Uh?"
Ellis seemed to have said something but her voice was so soft that he didn't catch it.
"Ahh, you've been rejected."
"It's alright, leader has us."
"Y...you guys... I...it's not like that!"
Ellis turned bright red and shouted at her two comrades, who were grinning and teasing her.
"H...hey, Kamito..."
"Hn?"
While still grabbing Kamito's uniform sleeve, she was bashfully saying something else.
"What's the matter?"
"...Th...thank...you."