Hanamonogatari Episode 4: Part 3 of 5
Episode 4 of 5 of Hanamonogatari, aired August 16, 2014, 25 minutes. Available with English subtitles and dub where released.
Episode summary
Suruga realizes that the collector is in fact Rouka, and she has been collecting parts of the "devil" as she feeds off the misfortune of others. Her motives are questionable...