Pondering adding the Adult tag. Looks older then normal Flandre, and I definitely like it, but regular Flandre looks 8 or 9, in this picture it's more 16-17. Do we have an 'age up' tag of sorts, that isn't just immediately to Adult?
There is the teen tag which has been defined for such things, but only 2 posts, and then there is the teenage tag which has no definition, but most of the images seem to be of a similar nature.