This part is why I dislike isekai manga in general. Thankfully the world setting in dachou is fairly interesting (1:1 geography with Earth and the LV.999 region being in South Africa) and it keeps me hooked.
I suppose making Reisu inherit memories from an ancient sage would write very differently from an isekai character like she is now. Thank you for the insight.
It'd be one thing if she was a student in a seiyuu school who was aspiring to be a voice actress. This is no different from a random dude who got isekai'ed to another world.