For me it's parasyte, such a powerful and badass opening + the song fits really well.
[video=youtube;Y44TibYAvd0]https://www.youtube.com/watch?v=Y44TibYAvd0[/video]
[video=youtube;Y44TibYAvd0]https://www.youtube.com/watch?v=Y44TibYAvd0[/video]