You're still reading, good. Now it's time to cover something that should be covered more in depth, rules. Now i have established that rules of the universe should be followed in an earlier chapter, but there are also other rules that should deal with something else. Pure scientific human functions. I don't care if there is magic in this universe, a majority of these characters are humans.

STEP 1: BE CAREFUL WITH DISEASES

While you can make diseases try to follow the basic medical terms. For example, don't use the itis suffix for everything to make it a disease. (NERD RAGE TIME) The itis suffix only refers to inflammation. This is when something in the body had to be swollen and reddened from an infection such as Bronchitis, that is an inflammation of the lung's bronchial tubes' lining. If nothing is inflamed, don't use the itis suffix to try and make it sound like a disease. So if a character has a stomach virus of some sort,a head injury, etc. there's no inflammation so don't call it whatever itis. I apologize but this is just a pet peeve.

Also, try to remember the difference between these two terms, diagnosis and prognosis. Here's an example of how to it is used incorrectly. The thunder god tribe takes Laxus to the hospital in a fic, and one of them asks, "So what's the prognosis?" to figure out what he's got. This is incorrect, a prognosis refers to where someone is going to end up. For example, Lucy has a broken wrist and the prognosis is that she has a 50% chance of recovering within a week. A diagnosis is straight up what someone has got. For example, Natsu has been diagnosed with a brutal fever. Don't confuse the two or use them randomly just to sound more medical.

STEP 2: BASIC BIOLOGY OF THE HUMAN BODY

In order to prevent making mistakes like Twilight author Stephanie Meyer, who contradicts herself constantly. Try to remember basic human biology for your stories. Always remember, no matter what magic they use, humans are warm blooded and when people touch them, they should not emit cold temperatures from their skin. In fact their skin should only be the same temperature as their environments. Even if they are ice based mages they are still humans and still retain body temperatures. If their body temperatures were to lower beneath 98.6 it can cause hypothermia. So please keep the character warm blooded, unless they were a hybrid of a reptile of some sort, reptiles are cold blooded animals. A cold blooded animal's body temperature changes with their environment, so if it is cold their body temperature is cold and vice verse. Additionally, if you're trying to make a character that's a hybrid of some sort, don't give them any more or less than 23 chromosome pairs to explain their hybrid appearance if you're trying to get scientific. (NERD RAGE TIME AGAIN) If a human has an extra chromosome in certain areas, it can cause down syndrome or other developmental disabilities and abnormalities which will prevent them from functioning normally. I have nothing against down syndrome people, but they are not likely to be a lead character in an anime like Fairy tail because they wouldn't be able to battle like the characters we all know and love most of the time. FYI most people with down syndrome can suffer form seizures in their adult life and it's estimated that this affects 50% of adults with the condition. There have also been studies conducted that display down people have very poor hand eye coordination compared to people without the condition. Also, some conditions involving a lack of chromosomes are often affiliated with gender, some people may have this condition and if you don't write it with sensitivity it can get offensive.

Also, when designing a female character, don't try to oversize her breasts too much. Yes the FT universe is known for busty women, but what I mean is don't give them a size that will make it impossible to even do any sort of combat or even stand. So don't be afraid to make B cupped characters. Yes, they can be busty, just keep them at a believable size for the Fairy tail universe. How do you know when they're too big? Can they make Lucy blush with envy? Do they hurt their back when they just stand? Do they have trouble balancing when they stand up? If yes to any of those questions,then they're too big.

Also, take note that when you want to make a character pregnant, don't over romanticize it. Meaning don't make it look easy, if they're a mage they need to perform simple jobs. They can't battle in difficult jobs while they're pregnant. Also, try to include some morning sickness, cravings, etc. Try to research pregnancy before making a character pregnant. Which brings me up to possibly the most important part.

STEP 3: DO NOT WRITE MPREG!

If you're trying to write a yaoi story fine, but do not write Mpreg, period. I repeat DON'T. You see men don't have the biological parts to carry babies at all. You can defend this with the movie Junior all you want or real life Thomas Betie. First of all, Junior was a terrible movie and Thomas Betie was a woman but came out later in life as a transgender so he still had his womb and female parts. A different species that is not human can have male pregnancies in a way, if that's the established biology of the species. However, 99% of mages in the Fairy Tail universe are humans, meaning that the males can't carry babies, they can only help make them. Also, according to Snappedchopstick on DA in her open letter to yaoi fangirls she stated,"You're just writing it because you think that your adorable couple needs a baby to cement their relationship, and babies just have to come from the innards of one of them, or it just doesn't count." And she's right, tell me what's the problem with adoption in the first place? It's actually very common for gay couples in real life to adopt a kid. In fact that would be refreshing, seeing a couple adopt a child in a story. Also, if you're writing a yaoi or something in the Fairy tail Universe, why not make a female character a surrogate mother? That's practiced for gay couples IRL as well. But please, for the love of God don't kill off the surrogate mother just because they get in the way of your OTP or something, but I will get to that issue later. Also, the only male creature that can even give birth in real life is a seahorse, and mages are not seahorses ALL RIGHT!

STEP 4: USE DISABILITIES IN A SMART MANNER!

It's true there are autistic and ADHD people out there. However, if they're portrayed the wrong way it can get very very risky. You see here's something you don't know about me but I have Asperger's syndrome. This is a mild form of autism, it gives most people diagnosed with this condition high intellectual skills but they have trouble communicating with other people. So if you portray people with a learning disability, be careful because most people don't want to be stereotyped. Also, learning disabilities are not really prominent in Japan compared to most western nations. In fact developmental disabilities in Japan are very rare so be careful.

However, when it comes to more crippled characters that can be done a bit safer. You see, most crippled people are not born crippled. In fact form what I know, there has to be an accident to make it happen. However, do not romanticize it. Being crippled is not something that can be romanticized, it's very hard for most people. You need to make sure that the character goes through disadvantages then finds ways to over come them slowly. This is why Toph from Avatar became so awesome, not because she's blind, because she figured out a way around it and other senses were strengthened. Her blindness is not romanticized in any form.

Please provide me with any questions.