Coincidentally , in many anime, ojou-sama who like to drink green tea while wearing kimono, and always smiling is the type that looked innocent but can read people like open books. And in action manga , they are the badasses or masterminds.
Green tea and a watch.
Shares the same pronunciation (lu cha biao) as 绿茶婊 (green tea bitch), referring to a girl who looks innocent and refined, but is actually very scheming and skilled at toying with another person's feelings. Similar to haraguroi but exclusively used toward females.