I'm torn about it, I actually hated it when I watched it initially since it felt too mean-spirited for me (yet I finished it?) but I can only think of it fondly now. I do know 2 things though, the OPs and EDs were great and she needs good porn, it's killing me.
Dokuro-chan > JoJo
Dokuro-chan > Gurren Lagann
Dokuro-chan > Monogatari
Dokuro a best.
Well, that's the reason Dokuro-chan was sent. MC messed up the natural order in the future. This is the result.
Dokuro is the sole reason he did all that in the first place, though