Is there any particular tag that would be best to describe the hand gesture of the girl on the right? It makes me think of what I've seen with ojousama characters in anime with having the hand in front of mouth while talking or laughing (the girl on the left has drill hair which is another common thing I think of - of course, I don't know what game this is from, so it's just an assumption that they are supposed to be ojousama characters). I do see some other examples of the particular gesture searching around (with the character Luvia Zeritta Edelfelt).
As for what to call it, there seems to be a hand_over_mouth tag, but it seems to be mainly used for girls covering their mouths with their hands. Should it be "hand_in_front_of_mouth"? I was also thinking of "ojousama_hand_gesture" given I suspect is it a stereotype of the character type, but that tag name wouldn't be as intuitive.