Complex sentence: However, only the memory of his atrocities, misdeeds and cold-hearted actions remained of what was Kurata himself after his downfall; a foul legacy of sorts that haunted everything for the remainder of the series.
Split into simpler sentences: However, only the memories of his atrocities, misdeeds and cold-hearted actions remained of what was Kurata himself after his downfall. He left a foul legacy of sorts that haunted everything for the remainder of the series.