User blog comment:Real Godisme/469. What I want to do/@comment-7418318-20160118171744/@comment-5303512-20160118172803

Well, Natsu does get sick sometimes when he eats anything other than fire or uneatable flames, also just like Chakra or Reishi, Ethernanos are very reminiscent with that of Radiation, it is pretty much the real world version of those different sources of energy, it can be helpful but used incorrectly and it can cause major damage, and it can develope overtime without people noticing. Plus as for Natsu getting cancer is very much similar to that of Goku getting heart disease during the Andriod Saga just to avoid him fighting the minor antagonists and save him up for the the final boss. And in my honest opinion, this isn't bad ways to go about it, the main character doesn't fight the mini bosses and is saved for the final boss.

Well, in actual old age warfare, Armies wouldn't just charge blindly in the night, that would warrant for a bloodbath on both sides and besides, battles such as this doesn't last long and of course there has to be respite for both forces. In modern warfare it is different, they have technology that allows for night combat. Plus there are the rules of war and engagement as well. Plus a commander most think about the welfare of their soldiers.

For Mavis reacting like that, it's normal for characters to react like that when they sense their comrades in danger.