Katsute Kami Datta Kemono-tachi e

Because they are both an action-oriented, somewhat political, post-war drama, that share a similar premise and setting. After fulfilling their role as “weapons of war”, the “Fairy soldiers" (Fairy Gone) and “Incarnates” (Abandoned Sacred Beasts) must now adapt to living a peaceful life in society, or be hunted down. Both shows feature a male and female duo that go around and investigate disturbances caused by the former soldiers. These soldiers have a supernatural ability to summon/become monsters; which in turn creates conflict among society.  

-To be perfectly honest the only similarity is the fact that the characters fight with special animal like powers or turn into animal themselves. 

They have similar themes like revenge for father by joining the killer. Each have their own good plot!