Weakness against the sun doesn't make sense.

[Mitera Nikkou]

If vampires are weak against sunlight then why don't they die or (at the very least) feel uncomfortable in the moonlight? Moonlight is just sunlight reflecting from it, so what makes it any different from any other object that reflects sunlight and kills vampires? I just don't get it. That's why I prefer the vampires that didn't have a problem with the sun; they found their target during the day so they could lure them in more secret environment of the night.

[Coruscate]

During ancient times people would unearth the dead to see if they were vampires. Those silly humans wasted endless hours staking corpses because their nails and hair "grew." It was really that the body shriveling up made it look like their was growth.

So since man thought the sun was good and right, and darkness evil due to what they feared, they decided these powerful dead must not be able to walk in daylight since they were always in their graves or some crap like that XD

[Nylena]

Not that vampires don't exist or anything, there's just so much people have done to scare themselves.