RCT-404 - Sister and brother's first king game turns into an incest creampie game

There are four entries in this series: father/daughter, mother/son, sister/brother, and this one, younger sister/older brother. I feel like this one has the weakest concept. A goofy older brother harassing his cute younger sister is a common trope (is it really??), so maybe that's why it feels the least taboo.

A brother and sister play the King's Game. The King's orders get increasingly extreme, like putting ketchup on nipples and licking them off. The sisters get horny for dick, and during a 'guess the dick' game, two guys end up blowing their loads. After watching them change into costumes and seeing the short-haired sister getting wild, they switch to a 'guess the pussy' game. The brother takes a turn, and unable to hold back, the siblings end up having incestuous raw sex. The short-haired sister, in particular, says she wants her brother's baby and makes him cum inside her twice.

They changed into school swimsuits, but the cosplay is kind of ruined, which is a shame.

First off, all three actresses were cute in a natural way. The scene where everyone watches the brother drooling on his sister was quite a turn-on. The scene where one sister is flipped over in front of everyone and penetrated is a must-see. The scene where all three sisters are naked behind a curtain, exposing their lower bodies, was also intense. Overall, it's packed with exciting scenes, so I feel like I got my money's worth. I really hope they turn this into a series.

*ROCKET's story progresses into an impossibly bright and incestuous affair, as promised. All three of them are pretty cute and erotic sisters, but Kuroki's younger sister Mika-chan is the best among them. Quiet? Otaku type? After her big breasts, which were hidden by her low-revealing clothes, were exposed, she did a great job of being licked with ketchup, pinched with Pocky, and given a titty fuck. That's fine, but as the bra contact gradually becomes more intense, she is raped by the obnoxious and forceful Mashima brother while being mistaken for her pussy, and Mashima's younger sister also takes a liking to Kuroki brother's dick and refuses to let go. She feels pity and irritation at this development, and can no longer pull out. After that, even though it's a sloppy second half, Shiraishi's younger sister comes to fuck Kuroki's penis, which is annoying, and it's hard for people who care about incest the most. After getting over that, they announced their pregnancy on the futon, and one couple had two consecutive cumshots, and it was great to see them hugging each other after everything was over.