Kisaku – Episode 4

This legendary adult anime series, known for pushing boundaries and exploring themes of violence, perversion, and lust, features a collection of three gripping storylines centered around the sadistic brothers Isaku, Shusaku, and Kisaku. The titles include "Isaku," "Shusaku," "Kisaku," with each brother having his own unique tale to tell through various series releases.

Starting with Isaku (遺作) in 1997, this provocative series spans several episodes and even a special recap episode, capturing the twisted mind of one of the most notorious brothers. Following closely behind is "Shusaku" in 1999, which delves into his dark world with three more chilling installments.

The saga continues with "Isaku Respect," released between February and September 2001, where each episode peels back another layer of the disturbed protagonist's psyche. Kisaku (鬼作) makes a grand entrance in January 2002 and takes his twisted desires to new heights across six engrossing episodes before leading up to more intense and thrilling encounters with "Shusaku Liberty" in early 2003.

By the time we reach 2014, these notorious siblings are back for another round of depravity as they star in three-part spinoffs titled "Kisaku Core Mix," "Shusaku Core Mix," and "Isaku Core Mix." Each brother's tale takes on a fresh twist with new characters, plotlines, and explicit sexual encounters that will have you hooked till the very end.

At its core, this iconic adult anime series explores themes of blackmail, sex, violence, perversion, and everything in between as it follows our three lead antiheroes through their twisted journeys across time. So sit back, relax, and prepare yourself for an unforgettable ride into the darkest corners of human desires!