LogFAQs > #967860948

I'll be completely forthright in saying that I have no recollection of how far the anime goes so I may be kinda talking past where it ends a bit, and if I do I'm sorry

But a huge part of the appeal of Tanya's character imo is specifically her desire to build up accomplishments and promotions so that she can get to a comfy office job in the rear and stay out of danger experiences and mindset being colored by her past life experience as an HR worker. Past the early parts of the series, that desire colors literally everything she does, and making her into a child, no matter how prodigious, would cut that off.

Then from there it has to be an isekai instead of a time travel story so that she can't just use her history knowledge as-is and has to adapt to the world she's now in with what she knows of her own world.