Completely new flags are the following studio ones for studios with 2 or more series:-
Taking the prominent stylized 'S' found on their website and running a 'line'/'shaft' thru it...
With the Deen symbol I'm trying to 'sum up' elements of the most prominent Deen series of the past, present and hopefully future as well. The stylized 'D' here is based on the Ouroboros symbol, which represents variously, the Eternal Return, rebirth and Infinity. The idea of infinity is meant to refer to Higurashi, which has the infinity symbol in its title logo. The idea of the 'eternal return' is meant to refer to Kore wa Zombie and the new Sankarea, both zombie series animated by Deen. Also if you stretch the idea a bit, Eternal Return/rebirth can be said to be what the servants in F/SN go through, heroes 'returning to life' long after they have perished in own times.
chained 'links' shaped in a rough 'S'
idea is two 'hands' ("f" and "l") brushing by each other.. the round stylized 'e's were thought of as kinda massage balls.. all with the concept of 'touching'/'feeling'..