So the synopsis of this hentai porn series is that there is a boy and a girl. They are not actual siblings but the girl always helps the guy with his studies and stays with him when his parents are not there. That is why he calls her his big sis. But then one day, a friend suggested to him to use this website for some fapping. And then in that website he sees a girl and to his shock it is his big sis! And he will never look at her the same way again.

Episode Breakdown

So the first episode starts off with the guy screaming that he loves Kasume-nee. And it was because he already got the answers without her telling him. So it was all about studies. It is revealed that he is about to get in his dream school, but he has to study hard. Kasume-nee has been helping him. And it is also revealed, tht whenever his parents are off abroad – she is there to see and tend to him at home. One day, he decided to explore an adult website and watch one video. In this video, the girl was unconscious and she was wearing a school uniform that looks just like their school’s uniform. He was fapping to it and then he realized something. That the girl looked like Kasume-nee.

Then the scene cuts to the two of them studying. And he was daydreaming of I guess that porn he watched so his mind was elsewhere. Kasume-nee gets clsoe to him and her big breasts were on his face and he was sweating like crazy because his boner is about to be seen. Kasume-nee gets pissed because he was not listening so she storms off. He on the other hand can not stop thinking about her breasts. So he decides to watch the same porn again. In this porn, the girl was getting fingered hard. In this video, the girl looks like Kasume-nee again. And now, he can not help but think what if it is her! And it sounds like her too. He watches and faps to this content while imagining fucking Kasume-nee and imagining that she does really moan like that. When this is over the scene cuts to Kasume-nee getting ready to leave for school and the guy just can not help but think that it is really her in the video.

Since he could not help it, he watches another one. And this other video, still has the same porn actress who looks like Kasume-nee. This time there were a lot of making out scenes and fucking doggy style. He faps so good once again with the imagination that it is Kasume-nee and him fucking hard. And then cut to the characters in some bookstore or library like setting. Here the guy sees Kasume-nee with a guy. She introduces him as someone from university who she consults some studies with. And then it goes back to the guy in his bedroom feeling horny, and then all of a sudden Kasume-nee goes to his bedroom in lingerie!

She reveals to Akun, the guy, that she reviewed his computer’s browsing history and saw all the videos he has been watching. She then revealed that she was the girl in those videos! He was right! That girl looked like her, because it was her! She crawls on the bed with him and seduces him. She reveals that she was actually consulting the guy he met in the bookstore like setting for advice on how to confront Akun about what she found out. She was thinking that if they finally have sex it will make him focus on his studies more. She sits on the tip of his hard cock. Before they show the actual scene, it was morning and Akun was all alone in his bedroom. Was it a dream?

He goes to his computer and opens the website again. She finds another video of Kasume-nee shouting how much she loves creampies. Apparantely, anjou-san the dude he met, would not have had sex with Kasume-nee if she did not have sex with him first. Damn – what a plot twist. He watches the video and he does not know how to feel. Will he fap to it or feel bad? He can not believe that his big sis is doing all of this. After all of that, it is revealed that he has to pretend to be Kasume-nee’s husband if she ever gets pregnant. And now he is just sad that their relationship had to reach this level

Series Review

Okay, so this hentai porn series only has one episode still. And in this episode they had a set up to the story already on who these characters are. Akun and Kasume-nee. We feel that this hentai porn series is trying hard to put some depth to its story but really it is all about sex only. Because yes they tried to put some story on how Kasume-nee is helping Alun but then out of nowhere, Akun is just randomly masturbating all the time to these videos with a pornstar that looks like Kasume. And then all of a sudden, Kasume wanted to have sex with him? There is really no flow in the story and well that is fine. But then the sex scenes are just so-so as well. It is not that great but one thing is we are still curious to see where this hentai porn series will go actually. There still might be potential. It is the first episode and there are no news if it is the last or when the next ones will be. So we are still awaiting that and maybe that will have more depth in the story or better sex scenes.

Now for the animation, it is pretty great actually. We like how the porn scenes are done. There is great fluidity to the movements which is great and which makes everything less awkward. The color grading was also great because it was not too bright, it was somewhat on the dark side but sharp but it also set the tone that the story will take a bit of a dark turn. So at least there is that.

As for the sound effects and voice acting, well it is normal. Nothing different that will make you want to review it. It is normal as per all hentai porn series.

So overall, well all we can say is we will decide if there is another episode in this hentai porn series to review it by. But as per this first episode, it is so-so and I will not really waste my time watching it. But if you want to try it out if it is fap-worthy, go ahead. It is not that bad – we think it will still get you pretty horny. Expct a lot of masturbation, throat fucking, cream pie, large breasts, and netorare.

Watch all episodes here:

HentaiStream – Netoshisu Episode 1