So she meets the ghost of the noble girl adventurer who was betrayed, r*ped and killed. MC inherits all her knowledge and memories, including magic and martial arts. But apparently, for some reason, she still has to go to school? She doesn't know a lot of common sense, like what is a healer association. Why doesn't she have a theory about magic and weapons already? Why can't she do stuff that the nobel girl could?

And finally.... When that peach-senpai appeared... I stopped reading this sh*t novel...

The MC is literally the greatest doctor in the world. Strongest in magical ability, has an understanding of modern medicine, and can enhance the abilities of other healers.

Brags about getting a salary of $45/day

Knows this is about a 1/4 the salary of an average person and likely makes them the lowest paid person there.

It's not the first or the last time the author tosses the idiot ball at you and it does get considerably worse.

The problem is while for the first 25 chapters MC is drafted as a healer during the war with the Demon Lord and becomes quite hardcore about it, later the author decides to quickly finish the on-going conflict to justify throwing MC into school. MC herself states that the only reason is to get a few friends her age (wait, weren't you a man in his thirties before reincarnating? You sure you need to be friends with elementary schoolers?). But when author's desire for fluff is involved both logic and character's traits become affordable sacrifices. MC goes to school incognito (because turns out she treated people in a mask, and the fact that saint-sama is a white elf, the only white elf in a town for the last few centruries miraculously didn't made it to public). Then things get angsty because MC has no talents besides healing magic, but for some reason the previously hardworking MC does surprisingly little to improve the situation. There's a scene where she couldn't find a suitable weapon for herself because everything is either heavy or requires high proficiency, but the idea of trying the most basic weapon - a dagger - never crosses her mind. Coincidentally few chapters later they are out on a hunting trip and she casually disembowels a dozen of pig-rabbits.

When I thought that things are starting to get interesting the translated chapters end, and at the very end it turns out that a fruit she casually conjured before on many occasions - "peachy-sensei" - went to World Peachy Conference and peachy-sempai was called instead, and these fruits can talk, even shares the intel on her enemy and suggests the way to defeat him. Fruit ex machina. This is some serious bullshit.

It was mentioned that she went to school for a chance to make more friends because she had none. But then she mentioned that she had a dark elf friend she made during her time as a healer.

She went to eat at food stalls. But later it was mentioned that she had a mask on during her consideration of going to school. As if you could eat through a mask.

Setting her talent to be E rank for magic seems to be very arbitrary and not necessary.