Currently read to 10th chapter, most of the mistakes are minor with a few paragraphs that don't make sense until you read it 3/4 times letting your brain automatically fix it. That ruins your story2nd annoyance is not being clear of what the **** is happening, yes MC reincarnated into past and has to fight some creatures but1 what planet are they on2 how many cities are their, you said 1 then later said their are others3 how much time has passed since continents disappeared4 how did continents just disappear- if they submerged underwater then in another part of the world another continent should have risen