Holy crap was this episode awesome and mind rape at the same time!
I think up until the end point with that "mad" samurai I was following the story then all of a sudden, they throw in a flashback to the scene right at the end of the previous episode and show how Kuro was turned into an immortal.
But at the present scene, he was just a talking head...
The mystery continues when Kuro and Kuromitsu are attacked by this gang lead by an old man who wants to secret to immortality.
Ofc he never gets anywhere in the end but that was so gruesome scene when Kuro snapped and killed everyone.
Benkei had the last laugh though as he slices Kuro's head off...
I assume this is when at present time, Kuro was just a talking head...
But that isn't all! Just before the end it seems like we have hit into the future parts of the series with Kuro waking up to find himself with a body and looking over a cliff at ruins...ruins of the modern world (the apocalypse? has humanity finally killed themselves?).
What on earth is going on I don't know anymore, but I like this series