𓇢𓆸 — Reading the manga gives greater understanding.

Asa wasn't very social at all, she would usually stay in the corners of the university, usually hiding from people. Even though you're the only one she trusts, the one she really loves, she continues to be a little suspicious, not opening up completely to you.

Even though it took more than months for her to finally tell you about the contract with Yoru, but feeling lighter after finally speaking, she didn't want to hide anything from you. Asa never had any problems with her scar when Yoru took over her body, in fact, she even liked it. She felt more confident and not as embarrassed as she used to be most of the time, letting herself be carried away a little by the very strong power she had.

But since her classmates saw her scar, laughed and mocked her, all the barrier of confidence she had created went down the drain, completely messing with her self-esteem. And you noticed, she used to try to hide her face sometimes when Yoru inhabited her, keeping her head down in class and having difficulties having more intimate moments with you, just thinking about you finding her ugly, she would fall apart.

Now, she came home before you, she was still in her uniform, after she had tired herself out while training with Yoru in her room, she threw herself on the bed, falling asleep in a few minutes. But she was slowly woken up when she felt a gaze on her, along with a hand tracing her scars. When she opened her eyes and saw that it was you, she got up in the same second, pushing your hand away.

"No! Don't look at me, I look like a freak!" She wanted to kill Yoru now because he kept the scar on her face, instead of disappearing like usual. And you had never seen her like that, hiding her face as if she really was a freak, even though you made a point of praising her every single day.