Circle: Parthenon (パルテノン)
Artist: Kawaraya A-ta (瓦屋A太)
Release Date: 2012-08-10

Lossless PNG rip.
Replacing http://dl.hentaiknight.work/?l=e-hentai/g/515954/6fe96c5731/

You people should stop tagging everything as incest whenever you see Onee-chan in the goddamn title. She's his childhood friend.

Base +20, Maximum_Joe +35, newdemo +4, marconii2002 +11, SlyZero +10, b0rk +10, feyan +12, as102 +10

Awesome stuff, I just love plump girls in submission! But again, who doesn't?

Base +12, indialover +8, whatevertheshit +8, Rei-Tenshi +38, newdemo +4, xBeowolfx +9

This is the greatest upload i've ever seen for something related to Sis-Bro Incest plot, Parthenon's works is amazing as always , man, i hope they made more mother-son story plot

Base +15, newdemo +4, SlyZero -10, xBeowolfx +9

Is it only me, or is the protagonist unusually cruel to the girl? She's a hardcore masochist and she enjoys being humiliated and in pain, but the extent that the guy goes is so extreme, especially for a guy who knew the girl for so many years. It's like, the guy was friend with her for like 10 years, and then he finds out that she is a masochist, so he immediately starts treating her like a slave or a human pet. We all know who's going to be the dominant role if they get married.

For example, he's making her wear that slutty SM costume while also making her drink milk from a pet bowl like cat. He then cums all over her face and his semen drops down to the milk so that she has to drink combined milk and semen like a whore. He's also making her give him a blowjob + titsjob in public library, and then cums all over her face and breasts. He then takes her to a park, makes her penetrate herself with that dildo machine while teasing her breasts with a dildo. He also fucks the living hell out of her in a (probably) male bathroom while putting a gag in her mouth so that she won't scream. He also fucks her naked in a forest while making her walk with a leash on in school. He also molest her in a train while doing some weird experiment on her as he stretches her vagina with a tool. The most hardcore case is at the end though. He makes his at least 8-month pregnant girlfriend to wear a perverted, skin-tight costume, binds her with rope, collar and leash, then shove huge dildos up her ass and make her cum. He even brings her outside and makes her cum in public while wearing that kind of shameless costume and being PREGNANT. What a BAD ASS!

Base +8, xBeowolfx +9