Tentacruel

A Japanese woman, a tentacle monster with one thing on his mind...

Japan has just been hit with a nuclear blast, sending all of the residents to their maker, except for a family of three that had foresight to find themselves in an underground bunker. Tamara is one such lucky soul, and she comes out to find that the rest of the population has been decimated and there is no sign of any life anywhere. Her curiosity gets the better of her, and she begins to explore on her own, until finally she is accosted by something that isn't fully human that wants to explore every part of her.

This is a japanese erotic story.