Same with garlic flowers, UV stun grenades, and silver-lined mirrors. New mirrors don't have any silver in them so they would show a vampire's reflection.
I would assume old-school vampires as most, if not all, vampires in media after 1950 were really dramatized or given additional abilities/weaknesses for dramatic effect. The moon reflecting the sun thing may sound like it works when thinking about it but the UV rays significantly are less powerful so it shouldn't have any effect at all.
@Paul_Tromba She is one of the many things I have bone with anime.
In all of technicality, she is right-of-age with the option of being pedobait. The *insert more than human lifespan* age coupled with a minor's body and suddenly it is a-okay. The inverse also happens to hold true with Yoko in that drill anime being 14 but has a mature body.
Because age of consent is a society thing, mental age is hard to grasp (mine is still of a toddler's like my dick) and all these that gave me a headache if IRL, so I will not delve into it any further.
But yes, something I would not touch, even with a ten yard stick.