My 3rd claim is
Mikuru Nazume from
Zeroin.
She's actually half Japanese/American and kind to everyone. Her childhood has been terrible as some gangsters made her kill her father under the influence of drugs. Since then, she has been yearning to get stronger and catch every gangster alive("No-Murder Mikuru"). She's part of the private police in Japan(Minkei) and is very skilled at using her weapon "BrenTen" at an age of 16. As often in mangas, she's very strong-willed and gets jealous easily :D -> Tsundere
Attention, pictures might not quite fit:|