Five
First was right when Neospring released so I didn't really put much effort into it, it was of Incompetent Detective from Process of Elimination, I'm one of the top PoE fans trust
Second was Han Sooyoung ORV, a day or so after the first, I had the time to put effort into my theme so I did, that was when I first wished Neospring had CSS, so I'm very happy it has it now
Third is Ayatsuji Yukito Bungou Stray Dogs Gaiden, a couple weeks before the CSS update
Fourth is Ivan Alnst right after the CSS update
And fifth and current one is Chisei Kuzuryu Paradox Live from a couple days ago