Our school therapist thinks it's all an elaborate trauma response. When questioned about it, he proposed that perhaps her survivor's guilt may have led her to live for her sister a bit too vicariously, and he didn't have the heart to intervene, since a counselor's job is to listen and help his clients heal at their own pace.

[But too many things feel... odd, and a rather somber look soon claims Akechi's face.]

What's odd is... she had access to the Metaverse independently from all of us. She was able to understand Morgana and didn't think to consider how strange that was until I brought it to her attention. Only then did she feign ignorance.